See, "After the Ball," (Madsen), "The Overhauling of Straight America," (Kirk), and "Gay Revolutionary," (Swift) for starters.

I don't purport to know the cause of same-sex attraction.  But I do know from friends who have chosen the homosexual identity that to call themselves "gay" was a decided choice, a decision to embrace their same-sex attraction and the acts associated with that attraction.  

As I say over and over again here, there is same-sex attraction, and then there are homosexual acts.  Conflating the former (which seems to have an element of involuntary predisposition) with the latter (which is totally a choice) under the banner "gay" is an attempt to bury the sin under the sinless.  

What could be wrong with someone who is "gay?"  It psychological manipulation and selective messaging towards people who are conflict averse and just want to get along.  You know what they say about the road to Hell....