Normal people want to believe the world is safe, and always having an exit plan messes with that assumption.

After this year, I may update my personal mottos to include "have at least three plans for everything," and yes this includes such basics as clean water.

And back in the nostalgic days of yore, I would end up joking with my coworkers that "I don't carry anything for an alien invasion... so you'll all be dealing with the Martians on your own!" I would, however, share my food stash if someone forgot their lunch...