You're right. Some people are born with their sexuality, some develop it over time. I'm straight, but sometimes I like to jerk off to trans porn. I don't think I was born with that in my DNA. I just saw it, it turned me on, and sometimes I like to watch it. Would I have sex with a transgender? I don't know, the opportunity has never crossed my path, but I'm sure I wasn't born with that taste. Was I born with this? I don't know, maybe, but in my opinion, I don't think I was.

My other fetish is panties. Panties aren't something that's natural, but I like them. I collect them from women I've had relations with, and I love to see my girlfriend wearing them. The fetish of them, in my opinion, is not something that you can be born with. I developed a taste(not literal) for them based on the correlation of panties and the sexualization of women. That is 100% an environmental fetish, not something I was born with.

So in my opinion, yes, most homosexuals are born that way. That seems to be the case, based on studies I've seen. That's not saying you can't develop your sexuality throughout life, and change your tastes.

I don't want to seem like I'm dissing people in the LBGT community by saying its a choice, but I'm saying it CAN be a choice. I respect people of all sexualities, it's none of my concern what other people like or dislike.