Anti gay-marriage atheist??

[Whateverist]

1. There is no such thing as an "evolutionary purpose". I gather the author made the term up?

I wonder what the author would say the 'evolutionary purpose' is for homosexuality among: male lions, male bison, female penguins, male dolphins, male elephants, brown bear and other species?

Good point.  One might almost think that sex drive alone was enough to explain why male dolphins will hump a turtle, each other or a number of other things.  Lucky bastards probably don't have any god or religion to make them wrong about it.