Even the CDC has been giving tips to folks on how to stock up to survive a zombie apocalypse. The same survival kit will come in handy for things like earthquakes, floods, and tornados too. Granted in a natural disaster of the non-zombie sort, you will get less use from your machete-throwing slingshot than when the zombie scourge rears its rotting head. Still, the key here is to be prepared for anything. I know many geeks that are powered by Hot Pockets and Dr. Pepper and the thought of going without internet access in a disaster is bad enough, but going sans snackage is more than they can take.