Well it depends. sometimes 'too much sensitivity' on the penis is not good for man (or actually its more for the woman?)
Aha!.. now I understand why Abraham (and Ron Jeremy) did it... rotfl rotfl rotfl
Following are some of the functions it performs, and what happens if you surgically remove it
Protection. The sleeve of tissue known as the foreskin normally covers the glans and protects it from abrasion, drying, callusing (keratinization), and environmental contaminants. The inner lining of the foreskin consists of soft mucosa lubrication layer, like behind one's eyelids, or the inner lips, thus protecting the sensitive glans. The glans (concealed in the picture) is intended to be a protected internal organ, like the female clitoris. The internal glans are highly sensitive, but after circumcision, begins to loose its sensitivity through abrasion in diaper or underwear. For the first few weeks, it is very painful to the touch of fabric or diaper. It is similar to the human eyeball, which is protected by the eye lids. One would not touch the eyeballs directly but over the eyelids only. After circumcision, the exposed glans begins to dry-out and keratinize (builds hardened cells on the outside as a defence from environmental contaminants).
In normal activity during adult life, even after loosing most of the sensitivity through abrasion post-circumcision, the abrasion/chafing of the glans against underwear without the protection of the foreskin causes constant, irritating 'abrasive' feelings. This is very uncomfortable in reality. However, as the procedure is usually done at childhood and the discomfort is consistent from then on, the brain learns to cope with it by suppressing these feelings. Never the less, a conscious effort can reveal this discomfort during adulthood.
Ridged Bands. The inner foreskin contains bands of densely innervated, sexually responsive tissue. They constitute a primary erogenous zone of the human penis and are important for realizing the fullness and intensity of sexual response.
The Frenulum. This is a highly nerve-laden web of tissue that tethers the inner foreskin to the underside of the glans.
Proper blood flow. The foreskin contains several feet of blood vessels, including the frenular artery and branches of the dorsal artery. The loss of this rich vascularization interrupts normal blood flow to the shaft and glans of the penis, damaging the natural function of the penis and altering its development.
Immunological defense. The soft mucosa of the inner foreskin produces plasma cells, which secrete immunoglobulin antibodies, and antibacterial and antiviral proteins, such as the pathogen-killing enzyme called lysozyme. All of the human mucosa (the linings of the mouth, eyelids, vagina, foreskin and anus) are the body's first line of defense against disease. This benefit of the foreskin could be one possible explanation why intact men are at lower risk of chlamydia and other sexually transmitted diseases.
Specialized sensory tissue. In addition to the "ridged bands" mentioned above, thousands of coiled fine-touch receptors (Meissner?s corpuscles) constitute the most important sensory component of the penis. The foreskin contains branches of the dorsal nerve and between 10,000 and 20,000 specialized erotogenic nerve endings of several types, which are capable of sensing slight motion and stretch, subtle changes in temperature, and fine gradations in texture. Thus, up to 20,000 nerve endings are destroyed by circumcision.
Gliding action. The foreskin is the only moving part of the penis. During any sexual activity, the foreskin and glans work in unison; their mutual interaction creates a complete sexual response. During intercourse, the non-abrasive gliding of the penis in and out of itself within the vagina facilitates smooth and pleasurable intercourse for both partners.
The shaft/glans also retract inwards/outwards throughout the day varying with bodily parameters. In an intact penis, the foreskin glides smoothly over the glans as necessary, excess skin gathers ahead of the glans and it can thus retract fully. On a circumcised penis, the cut foreskin buckle and crease against the stitched position on the glans as it retracts, preventing the glans from retracting fully. This push of the buckled foreskin against the joint (stitch) on the coronal ridge of the glans during retractions through out the day (as well as pull during erection) is unnatural and uncomfortable compared to an intact naturally gliding foreskin-glans combination. Circumcised males have to again, subconsciously learn to ignore the discomfort. Stinging sensations along the coronal ridge (stitched position) may be felt during adulthood.
Proper lymph flow. The foreskin contains lymphatic vessels, which are necessary for proper lymph flow and immunological functioning.
Langerhans cells. These specialized epithelial cells are a component of the immune system and may play a role in protecting the penis from sexually transmitted infections such as HIV (AIDS).
Dartos Fascia. This is a smooth muscle sheath that underlies the scrotum, the entire penis and the tip of the foreskin. It is necessary for proper temperature regulation of the genitals (causing these structures to elongate in the heat and shrink in the cold). Approximately half of the Dartos Fascia is destroyed by circumcision. In circumcised males, the glans can become cold at times due to the missing temperature control mechanism (exposed glans).
Sebaceous glands. The oils produced by these glands lubricate and moisturize the foreskin and glans, so that the two structures function together smoothly.
Full penis length and circumference. The foreskin creates a visibly longer penis, especially when the foreskin extends beyond the head of the penis. Also, the double-layered tissue of the foreskin engorges with blood during erection and creates a visibly and sensually thicker shaft and glans. When the engorged foreskin retracts behind the coronal ridge of the glans, it often creates a wider and more pronounced "ridge" that many partners find especially stimulating during penetrative intercourse. The circumcised penis appears truncated and thinner than a full-sized intact penis.
Zero risk of death from surgery. Every year, a boy dies from the complications of circumcision in the United States alone. Worldwide the figure is much higher, a fact that the American circumcision industry ignores, obscures, or downplays.
Zero risk of delayed or diminished maternal bonding. Circumcision, even if anesthesia is used, causes unavoidable operative trauma and post-operative pain that has been shown to disrupt bonding with the mother, which in turn interferes with the first developmental task of every human, that of trust (trust in human contact, in personal safety, etc)."
Oestrogen Receptors. The presence of estrogen receptors within the foreskin has only recently been discovered. Their purpose is not yet understood and needs further study.
Muscle Sheath. Circumcision removes approximately half of the temperature-sensitive smooth muscle sheath which lies between the outer layer of skin and the corpus cavernosa. This is called the dartos fascia.
Neurological Sexual Communication. Although never studied scientifically, contemporary evidence suggests that a penis without its foreskin lacks the capacity for the subtle neurological "cross-communication" that occurs only during contact between mucous membranes and which contributes to the experience of sexual pleasure. Amputating an infant boy's multi-functional foreskin is a low-grade neurological castration" , which diminishes the intensity of the entire sexual experience for both the circumcised male and his partner). (2)
SATAN'S FIRM PLEDGE TO CHANGE ALLAH'S CREATION IN THE QUR'AN
The Satan pledges to make mankind alter bits of what Allah has created. Allah tells us this information in the following Verse
", 'I will lead them astray and fill them with false hopes. I will command them and they will cut off cattle's ears. I will command them and they will change Allah's creation.' Anyone who takes Satan as his protector in place of Allah has clearly lost everything. He makes promises to them and fills them with false hopes. But what Satan promises them is nothing but delusion." (Qur'an 4119-120)
As can be seen, the Satan pledges to make people change what Allah has originally created. The fact that Satan uses the Cattle's ears as an example does not at all mean his scheming to change Allah's creation will be limited to this. This is because Satan's goal is to make people change what Allah originally creates, not the act of cutting off cattle's ears which is only a means to the objective - he can take other means too. We know this from his statement, "I will command them and they will change Allah's creation" where he clearly states his objective.
DIFFERENCES IN EMOTIONAL RESPONSES TO MALE AND FEMALE CIRCUMCISION
The female circumcision can vary from removal of the clitoral hood, the clitoris it self, to the entire labia majora and minora. In reality, male circumcision is too an amputation procedure involving significant tissue removal, which destroys the functionality and sexual capability of the male penis to a significant extent. However, the response to female circumcision is often starkly different to the male. The reasons to this are several folds but primarily that of 'cultural acceptance'. In parts of Africa, it is normal to circumcise girls and they have 'justifications' for it too.
The erroneous belief that circumcision prevents Penile Cancer
This is a very rare form of cancer that happens mostly to elder men from age 40 and above, but most cases are in men aged 60 and over. This cancerous growth can occur on the glans or the foreskin. Circumcision does not prevent penile cancer. In the United States, most men with penile cancer are circumcised. It is a rare cancer - in the UK, only 500 men are diagnosed with it each year. The rarity of this form of cancer manifests when this figure is compared with 35,000 men diagnosed with prostates cancer each year(5) ! However, does circumcision reduce the risk of penile cancer despite it being a very low risk cancer already? Basically, by removing part of the penis in circumcision, a part of the penis is not there to develop cancer. This is the same as saying, by removing the liver, we eliminate liver cancer! It is obvious to a thinking person that this sort of prevention where healthy parts of the body with many functions is simply cut off is not a way to prevent a disease which has not even occurred, and moreover which has an extremely small chance of happening.
In addition, a recent study done my Wallerstein found that circumcision does not help reduce the risk of penile cancer as the rates of penile cancer in Japan, Norway and Sweden (countries with low rate of circumcision) was the same as United States' (which has a higher rate of circumcision)(6). In view of all that has been said, the 'Royal Australasian College of Physicians' and the 'American Medical Association' made a statement saying that carrying out infant circumcision with the hope of preventing penile cancer is not justified(7), with the 'American Cancer Society' also holding the same view.
