Picking up on where Susan left off, let's assume it hits and your building somehow survives with you and your stuff in it (we won't discuss it collapsing with you and your stuff in it, that would be pointless). You bring the supplies from your car kits up to your condo and then wait, listening to the news on your radio. Days go by and you're doing fine. Then the looting starts.

When the serious looters get to your condo and the supermarket shelves have been stripped, how will you stop them from taking your stuff? Even if you have a solid door, one good kick and that's not a problem for a looter. Breaking stuff? Look around, everything is broken. Police? Not today even if you could call 9-1-1. You are on your own for protecting yourselves and your stuff. It's not just stuff is it; these are your survival supplies and you can't get more, not today and probably not next week/month. Without them you won't have anything to eat.

Can you use a shotgun? Do you have one? Is that even an option?

I'm in SOCAL and while we don't live on one of the faults, they're all around us. The house might be standing, but Ralph's won't be getting any deliveries anytime soon following the Big One. I've got a shotgun, more than one.