I am going to pass at throwing stones at these people.
Same here. But I think we've all see over the last week just how truly thin the veneer of society can truly be. As bad as Sandy was, consider if it had been something much worse, like the 1938 hurricane, etc.
Now imagine that such a storm was a widespread event, to the point where people all up and down the East Coast needed to use their resources there, rather than send them to a single spot. Electricity cut to TENS of millions, refineries shut down for weeks or months, etc.
Even relatively unaffected areas like here would see fuel and food shortages in very short order.
And as far as the "dumpster diving" goes, yeah, the ex did a month-long assignment in NYC where her employer got her an apartment on the Upper West Side (quite a nice area) and it was the size of a cracker box. Two electric burner stove, a mini fridge, and just enough cupboard space for a few dishes and a can of beans. Compare that to living where I do, with plenty of storage and cabinet space, and if the electricity goes out, no worries, the BBQ on the back porch'll work just fine, and the generator can keep the stuff in the fridge and freezer nice and cold as long as I have gas (15 gallons plus whatever's in the generator.)
So space DOES in fact have a lot to do with one's ability to withstand disaster and the aftermath. Manhattan has a population pushing 2 million, and is only 23 square miles. Think about that. My town has an area of over 50 square miles, and a population of barely 30,000.