I have always thought prepping is a bit ridicoulous when it goes to far. Sure, having preparations for a week or two with water, food, warmth and shelter is awesome and can be a real life-saver, but the whole "survive armageddon by stockpiling" is not something I think will help you.

If shit goes down it will be your social skills and teamwork with others that will be important, not isolate yourself in a bunker.