Skeptic,
I read that evolutionists believe that homosexuality had/has a survival advantage for the human race as a whole. The male was usually the hunter, and men hunted in groups. Homosexuality helped bond some of these groups together, and so these men worked more effectively together as a unit. Hence, there was a survival advantage to homosexuality. Hence, more of the groups that contained homosexuals survived than those who did not.
Uh oh. This is a a "group selection" argument. Do the math, and you'll see it does not work. If the individual's fitness is reduced by a gene, it does not help one whim if it improves group survival. The gene will still be deleted. Group selection-thinking is not popular among geneticists. If it ever had any role, it is pretty neglible.
I also think the theory is a bit speculative. I don't really see how a few gays among a group of male hunter gatherers helps them bond together. It could just as well work the other way.
- Jan
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Faith, n. Belief without evidence in what is told by one who speaks without knowledge, of things without parallel. [Ambrose Bierce, The Devil´s Dictionary, 1911]