I suppose that we are all reduced to our base insticts the ammoral society you describe.
By extesion, I am guessing that you would approve of a man you - like other animal speices- who would be inclined to compete with and/or defend the woman he is trying to propogate with. The stronger, more cunnning victor in such a conflict would then earn the right to pass on his favorable genes.
The only problem with your ammoral plan, is that we live in a society of laws. The superior man would not be able to reproduce becuase he would be imprisoned.
Your rationalization of your apparantly ammoral lifestyle is only intended to antagonize those who suffer and to "cheat" yourself of the truth of who you really are- a miserable, empty, philanderer.