The point of this thread is that certain people put a lot of effort stockpiling resources to survive hurricane/earthquake and completely ignore that their lifestyle could making that impossible regardless of any resources they have. Not having diabetes, or failing kidneys/liver/gallbladder does increase one's chances quite a bit.
I'm pretty sure the tractor plow, heater and fuel that could help you after a snowstorm aren't going to as much if you are trying to survive a heat wave in the dessert. In that scenario a big tank of water would go far longer than a big tank of fuel. In flood your priorities are completely different too.
There is common sense and there is looney, and having a generator in a power-outage prone area may be quite sensible, but keeping one in your upper east side apartment (if your building doesn't already have it) is the second.