Neutralmind writes:
Why would gay guys even be born if there is so much less chance that they're genes will get passed on? What evolutionary advantage (considering passing on genes) do gay men have over straight?
You seem to be infering that being gay must have a predetermined 'role' in evolution.
Being gay could be an emergent propperty of being a human.
Like being an artiste: some are, some are not.
It may
confer some adaptive advantage but that would very much depend on the culture.
In a very macho culture you would most likely see less expression of overtely camp men but you would still get homosexuality.
Biological systems are prone to having emergent propperties; perhaps homosexuality, just like having aristic talent is simply expressions or one way in which the human organism exist.
Invoking so reason
for it being so is putting the cart before the horse.
If you really wanted an answer in evolutionary terms, just look at groups with an alpha male and a hareem.
I believe humans were once in that camp, many moons ago.