as they count themselves among those who would survive that level of disaster.

I wonder what gives them such confidence that they would survive. I mean bombs can kill rich just as well as the poor...

And there are those who believe that the problem with the world is overpopulation is the problem anyway

I used to think this. But was never so extreme in my views that I would wish for war or other disasters. I just thought that having 2 kids should be enough for most people for a few decades. Now I somehow changed my mind and believe that human stupidity and greed are bigger problems than overpopulation.