There are two critical problems with this discusion so far.
A) the justifiction for homosexuality: don't need one.
That dosen't mean a curious socioligist can't ponder the stats on gay folk, scientists SHOULD study their brain chemistry: they are technically deviants. that being said, if i were gay, i would be massively pissed at having to defend, justify, and argue for my sexual preference everytime some ******* decided that i must have been brought up somewhat askew. Pro or con, it's not that these discussions or wrong, per se but think of it this way: you might argue to a fundlementalist that science has proved that homosexuals have genetic predispositions towards their homo ways. "Well that's easy" says the creationist, "Science has been wrong about a ton of stuff. End of story." And the nature argument disappears in puff of creation. This leaves the nurture argument, which generally blames the mother for gaying up the boys. (interestingly, i beleive freudians blamed autism on a disinterested mother). You can't win.
which brings me to my second point:
B)Lesbians. the good stuff. Anyone who's spent two seconds analysing the lesbian fantasy (intead of *****ing or dreaming about it) would probably conclude that there is no such thing. The fantasy comes apart pretty quick if you can't get in the middle of it, no? ipso facto, not lesbians if they're happy to put out both ways. Let a red blooded guy in on the secret that lesbos don't LIKE guys, and his bigotry finds its way back front and center. What good is a woman (or two, or three) if she isn't subserviant to the big man? That's right, none.
This is where male homosexuals become the most threatening to the homophobe. I think most people could easily conclude that, hey, it's a man's world and we're damned if it's gonna change. But if those guys don't want the chicks, that means more for me, right? tsk, tsk. Dosen't work like that. The goal here is to keep the women in line. Those guys aren't pulling their weight in proping up the paternity. Not only that, but they're giving those women folk ideas...note that almost every right wing campaing tends to be directed towards women and womens rights. So how do gay men fight into this new crusade? Homosexuals are terribly dangerous to the masogynist.