Water-Bug wrote:
In a short term disater, you will be seperated from your disaster cache in short order. (By weather, thieves, fire, water, etc) In a long term disaster, you will still starve, just a month later than everyone else.
EDIT. In the US, people don't starve during a disaster. Disease, looters and exposure will get you first.
Many people have guns as part of their emergency preparedness items. I think an RV also can provide a mobile shelter if roads are passable or even a stationary shelter if homes are not able to be occupied (gas line breaks, etc).