What are you going on about? That is one of the most incorrect interpretations of natural selection I have heard. 

As a side note, I hear that kind of argument from "preppers" a few times too many. "I've got a gun case full of guns and a bunker filled with canned food and a port-a-potty. It's survival of the fittest and I'll be the strong and re-populate the earth as soon as I can find a woman worthy of my manliness!"