It's the overrated self-esteem thing. One guy i flew with said that locals should be allowed to drive faster because they think faster and are therfore the better drivers. Not surprisingly he didn't demonstrate that skill at controls. Not to say he was worse, but quite average, as we all are, only human.
The problem is, as was said before, that at a certain stage we men all feel supernatural. There the parents, teachers and the society, but especially fathers, have to step in and give most of us a reality check. Actually this fades out in western societies, with divorces single parents or ill fated patchwork families, thus the rising problems with our youth. But in a society where women count less and any authority but the fathers of the tribe belonging to a certain religion is disrespected, such reality checks don't happen at all. Especially as the fathers excell more in chasing money and blondes than beeing at home.
But i agree, it's natural selection which ultimately leaves the more reasonable who survive.