Preparing for the end of the world is ok if you admit its just a hobby and because its fun to buy shit and helps you be self sufficient in a real and more likely emergency.
Actually believing in zombies and the end of society is not ok.
Lulz.
And I love fantasizing about zombies and apocalypse scenarios as much as anyone but come on. I took a look at some of these prepper shows and had to stop. Just ridiculous.
Zombies are fantasy, if you really think that is why most people prepare for 'shit hits the fan' situations then you are just as ignorant.
Society has ended several times on this planet. Hell just a couple days into a disaster shows people killing, raping and looting.
The uber rich are probably some of those that are preparing the most at this moment for 'something'. Strategic bunkers, bomb proof walls, fortified vehicles, months of surplus and even months of wine and exotic foods.
Our world will not last forever, however; that isn't what most even need to focus on...a simple power shift can turn us into something entirely foreign overnight and we are heading more and more in that direction with more and more of our basic rights and the way certain situations can trump even our constitutional rights (Patriot Act).
That said, someone barely surviving and stockpiling weapons and ammo without even basic foods/water is nuts. IMHO stockpiling anything but a few weapons is crazy, what one really wants is ammo. Also these stockpilers let themselves be well known and don't even take basic security precautions and wonder why they get robbed often as well as when the shit really hits the fan will wonder why their neighbors paint a target on them.