Broad statement what can you produce as evidence?
Are you serious, since the only ones that count are the parents of the following generation.
Cheers
Your argument is flawed. Homosexuality does NOT necessarily preclude breeding.
As much as I hate the phrase there is a little truth to the idea of "preference" regarding sexual orientation. Being LG or T does NOT automatically mean that one is INFERTILE. Essentially, the LG part (and there is MUCH more to sexual orientation than strictly what tab goes into what slot) indicates that one's "preference" (if you will) for healthy, long term, non-familial, adult relationships which include sexual activity is with members of one's own sex. I leave the T out of this particular statement because there are more complicating factors for T-folks than for cis-gender folks, not out of any conscious cis-genderism.
Just because I am not attracted to women (and my lesbian sisters aren't attracted to men), and don't normally pursue sexual encounters with them does not mean either:
1) That I am infertile, or
2) That I am incapable of "closing my eyes and thinking of England" or "taking one for the team". Fantasy is a very powerful motivator in sexual encounters resulting in the one absolutely necessary event for a male to breed: an erection leading to ejaculation.
Enough "liquid courage" at a fraternity/New Year's/Birthday/Halloween party and I would be quite capable of having sex with a woman without birth control (on either of our parts), potentially resulting in my fathering some ducklings. Other scenarios might also (under abnormal {for me} circumstances) lead to my breeding. In modern society with modern technology it is also quite possible that I would pass my genes on by some other means such as invitro-fertilization or via a sperm bank. In social circumstances that result in particularly strong taboos on homosexual behavior, "thinking of England" could result in
several children, just ask former Senator Larry Craig, or pastor Ted Haggard.
So being L or G is by NO means an evolutionary dead end, and it is quite possible for L or G peeps to pass on their genetic material quite evolutionarily successfully, particularly if all we are considering for evolutionary success is pushing out a couple of brats. Until the 1950s or so, T-folks would have been limited (at least in christianized European based societies) to living as and within their birth gender (generally speaking, there are no doubt some exceptions), neither of which would necessarily preclude breeding.
