I have watched the show once. Kinda silly. I personally think that being ready for a disaster, like a tornado or hurricane or earthquake or a massive snow storm is normal. Getting ready for a massive crime wave and you would have to shoot 100 people is downright wrong thinking, besides you wouldnt last long against a mob of others trying loot/steal/kill you. Society as a whole would have to be degraded to the point of no police force, the majority of everyone throwing their morals and common sense away and deciding to go on a smash and grab looting crime spree. (I just dont see it happening)
I must mention though that several years ago there was 2 day long power outage. The local grocery store, and it is good size had to throw away freezers full of pizzas, meat, TV dinners, you name it. They didnt have a generator. I went into that store the day after the power was back on and it was an eerie sight, all the freezers were empty.....Made me think for a minute, what if.