I'm no different either

The reason people prepare for a Z outbreak is that if you're prepared for zombies, you're pretty much covered for any catastrophe. Particularly because as every zombie movie/tv show/comic shows, its not the zombies that are dangerous, its people. Think about it, earthquake or other natural disaster, you've got all your supplies. Foreign country invades, you've got weapons. If you only prepare for natural disasters, you don't have any weapons.

pfft i have a katana gon' michonne this bitch

Psssst, people. Zombies do not exist. No need to make scenarios about it.