Funked.. I have historical evidence that homosexuality IS detrimental to survival.
Sparta.
There exists no evidence that I am aware of that homosexual behavior in apes, pre-humans, subhumans, neanderthals, etc was either tolerated or encouraged in survival oriented societies..
It IS in fact a great nuisance to our modern society.. in terms of the general health of our species it's toll has been immense. In terms of 'population control', thoughout history wars, famine, climate changes etc have all played a far more significant role in keeping our numbers down than buggery ever did.