I find it funny that the single most destructive weapon that we as humans have ever created came out of the single most destructive conflict in human history. There will never again be a war on par with WW2 - if anything like that were to ever occur, nuclear weapons would come into play and human society would be completely obliterated. I say keep the nukes - yeah, they waste money, but they keep us in check, and they ensure wars remain relatively small.