That's the prime example of the naturalist fallacy. The way something is implies nothing about the way things ought to be. That we are around because our ancestors reproduced does not mean we must also reproduce. What naturally happens is not necessarily morally acceptable. Otherwise it would also be morally acceptable for me to kill your children and impregnate your wife, as happens with so many animal species.

I recall explaining this to you before. I will value your comments much lower in the future, since I will always have to watch for you being equally irrational about other subjects.