Not your opinion...? Then what are you getting at...?
Are you saying that some people are doomed to fail...?
I am saying that in the Darwinian school of evolutionary thot, the "unfit" (old, young, injured, physically challenged, etc) are naturally weeded out of the chain. Only those with the strongest genes survive to reproduce. If your infertile, you obviously can't reproduce.
Do I believe in natural selection? To some extent. I think we need to examine the age we are in now, but if it was all taken away I do think natural selection would come into play.
Brain vs. Brawn?
This world might be a better place if men fought with their fists and not bombs.
I don't think anyone is doomed to fail as far as their eternal soul is concerned.