Quote: Getting rid of the whole moral argument completely, you can not possibly argue the fact that it goes against nature and biology, a science. Taking the pure scientific stance on the issue, an organism's sole purpose for being is to reproduce and keep the species alive. How can gays do that?
Of course you can argue that fact. Hell, there's not even anything to argue.
Homosexual and Asexual animals are created in nature all the time, and that's an outright fact.
As animal populations in regions increase, instances of Homosexuality and Asexuality also increase. It's Nature's method of population control.
If that is "an organism's sole purpose" than why are millions of people born every year without the physical ability to reproduce? Do they no longer serve a purpose in life?