One of the more unusual things I noticed is that younger people seem to have no clue as to what a power outage really is.
My friend was running a convenience store with flashlights and a single battery pack to run the register, and faced an endless stream of youths asking some pretty dangerously naive questions, like, why can't you use my credit card? and, where is the nearest ATM?, and, why don't the gas pumps work? and, can you charge my phone for me that I burned out texting with friends, and--seriously--why don't you just make more ice? Seriously?!?
Some folks simply could not understand that a cell phone tower requires electricity to transmit and receive signals, so when the electricity goes, so do all the cell phones that everyone thinks will be working in an emergency.
Arthur C. Clarke once observed that any sufficiently advanced technology is indistinguishable from magic to outsiders. I did not realize that maxim applies to the people within the society, as well.
If the zombie apocalypse comes, we're fucked.