[Grizabella]

The NATURAL reason for sex in any species is to reproduce. You can't reproduce with the same sex. So how is it natural to have sex with the same sex?

The definition of natural is that it occurs in nature. It has been documented that homosexuality occurs in other species. Therefore it occurs in nature, and therefore it is natural.

You can't 100% prove that there is a biological connection. So does that mean that the biological connection does not exist? Who knows. But you can't prove it. And if you use the theory that you people use on God "You can't prove it so it doesn't exist", using your logic on that topic, the biological connection does not exist. I'm not saying that, I'm just using your people's logic on this one.

No one argues that it's 100% proven - anyone who thinks science ever says that needs to step back a second. The argument against God is that there is no evidence, and that until such a time as said evidence arises, we should not operate under the presumption that he does exist. The goal of science is not to prove, it is to provide the best explanation of our world at a given time. The biological side, as we said earlier, is not the be all and end all of the matter. Of course society and upbringing probably plays some role in it. The difference between these two examples is that in the case of God, no evidence exists to support the theory, and in the case of homosexuality, a large amount of evidence exists. That doesn't 100% mean it's true, but it does mean that until we can come up with a better explanation, this is the one we use.