"Murder, rape, theft, incest, promiscuity, nudity, cannibalism...all occur within biological life forms in nature also."
Nudity? I think I'd take that off the list. I don't know anyone who was born in a three-piece suit.
Exactly my point. Why is it illegal? It is certainly more natural than gay sex. The only reason is that it offends the moral sense of the public. That's it.