Being prepared while the majority are not can invite its own unique set of problems.  If your house is all lit up and the generator is puttering away, those without will come wishing. We lost power for fours days back in 2014, in our subdivision of maybe 100 homes, only 3 of us had generators which (we used sparingly).  Nobody bothered us but that was only four day event, if it was a longer outage, who knows....