Evolution doesn't kill anything. Sometimes the environment kills things, sometimes they reach the full expression of their complexity without being killed. Evolution is when the environment kills and diversity is reduced, and the herd now again consists of those whose nature is capable of full expression in the environment.
Ever heard of Gnosticism? They preached that this world was inherently evil, and that when humanity went extinct, we'd all be resurrected in a much nicer world, and therefore, breeding was an evil act.
Not too many Gnostics around. See how that works?