Wild animals also kill for sport, and rape, and steal, and eat their own babies. I do think it's important to understand that humans are animals, and that they

Wild animals also kill for sport, and rape, and steal, and eat their own babies. I do think it's important to understand that humans are animals, and that they are not uniquely immoral within the animal kingdom, but the fact that something happens in nature isn't sufficient in order to morally justify it. Humans ARE unique in their capability to reflect on the morality of behavior at a high level. Where I think your argument is strongest, as I said, is in response to the claims that humans are uniquely malevolent, as if most species aren't constantly maximizing their acquisition of resources within the boundaries of their capabilities. That just doesn't mean that we have carte blanche on all behavior we can observe in nature.