Here's the curious thing...people are stocking up on milk and bread and guns and generators and chainsaws because they think the world is ending.
My question is, if they really believe that, why the hell are they stocking up???
Anyway, I understand getting more milk, because they have to hurry up and eat all the cereal and oreos laying around.
As for the other stuff, I guess they plan to line up the chainsaws and put them out of their misery with the guns, using the generators for electric lights in case the end comes after dark.