I'm in Florida.

I don't think it's as simple as share or not share. It's more like, cooperate or not. Using the three day figure, I'd be in big trouble on the fourth day, or the fifth if I'd been a jerk to those around me the first three days. Funny you pick three days. Turns out, down here, services are going to be down in various degrees for at least a full week, more in some areas.

Part of my planning is to buy more than I need because I know there are those around me who can't, or won't prepare. And I don't mean total strangers, either. Neighbors, friends, family... they're just as bad at not preparing. I WILL NOT refuse to help friends or family, just because they could have done something and didn't.

People are imperfect. It's frustrating. But there are people who will refuse to plan, get in trouble, regret the lack of planning, then refuse to prepare for the next crisis when the current crisis is over.

Helping others, at least to some degree isnt altruistic, either. It's rational self interest. The neighbor I give water to may not have prepared, but he owns and knows how to use a rather large chain saw. The friend I loan a flashlight to may not have prepared, but he might get his power back days before I do (actually happened). Think of buying more supplies than you need as redundancy. Or being prepared for a barter economy.

However, I do agree with others here. I keep a low profile. I don't advertise the fact that I have supplies. I want the decision to help someone to be mine, not the mob outside. :-)