Spence Thompson said:
I mean, it's not as if my sexual history with women is nil. And it's not as if there aren't things about it I don't appreciate. But I dunno, being queer as fuck is just tons more fun. Can you blame me? Have you been to a drag show, recently? Hilarious. And attractive men tend to be not near as inaccessible as attractive women. The odds are simply more favorable.
They're only favorable if you see the sex with an attractive guy as a good thing. Some people just don't. Can't. Whatever.
If you don't have that initial value judgement (what people call being gay or at least bisexual) then sex with another man wouldn't even be on your spectrum as a positive. Instead, it'd be like being molested by a tentacle monster (unless you're into that sort of thing, too)... horrifying. That initial value judgement has to come from somewhere, and it might as well be genetic... though I expect you'd have a hell of a time proving that it actually was. In the end, I don't much think it matters.
The point is, being gay/bi/whatever is a legitimate option, regardless of whether it grosses people out or not. The point is, guys who like dudes shouldn't be forced to keep that preference under wraps, same for girls who like gals. The fact that they can still choose to, if it makes their lives easier in some way, is definitely valid, but for society to force them to keep quiet about it is wrong, whether it's genetic or not.