Peace be upon you.
I understand that the verses on homosexuality are in reference to Lut's people. Before I cite those, I want to state that at the present moment, I am unequivocally against homophobia. I don't believe homosexuality can be considered sinful under the understanding that it is not a personal choice. After studying some developmental psychology and reading papers on homosexuality, I have come to the conclusion that homosexuality is not, by any means, a personal choice. Based on current scientific literature, it is not even linked to upbringing. There has long been established a hereditary link; the current progress is discovering a causal link by means of epigenetics.
I'm of the opinion that you're right. For all those wondering, there has been a series of documentaries which focuses on heritability among other things, and in one episode, it touches on the issue of homosexuality http//vimeo.com/album/2907736/video/19869748
At a part in this video, we come to twins, one of which is gay while the other isn't so. The explanation given is that while they are genetically identical people, they have differing epigenetics (i.e. they have the same genes but they express genes differently, through no choice of their own). We can reasonably come to the conclusion that some people are simply born homosexual, and I think it is simply unproductive to think otherwise.
As for my honest opinion, homosexuality is not a sin, but for someone to approach another of the same sex with desire is forbidden. I have felt this desire before, but with God's help, I will never approach a man with it.
The people of Lut rejected the messengers. Behold, their brother Lut said to them ?Will ye not fear (Allah)? I am to you a messenger worthy of all trust. So fear Allah and obey me. No reward do I ask of you for it my reward is only from the lord of the Worlds. Of all the creatures in the world, will ye approach males, And leave those whom Allah has created for you to be your mates? Nay, ye are a people transgressing (all limits)!?
They said ?If thou desist not, O Lut! thou wilt assuredly be cast out!?
He said ?I do detest your doings.? (Surat ash-Shuara 160-16
Do the people think that they will be left to say, "We believe" and they will not be tried? But We have certainly tried those before them, and Allah will surely make evident those who are truthful, and He will surely make evident the liars. (Surat al-'Anqabut 2-3)
Allah knows best.