I’m know it’s a meme, but a lot of people actually live like this. It’s part of that insanity of fear that people live in. “Except one” implies that it’s inevitable that you’ll be attacked in the night.
It’s just like the psychos who stock up on guns, they’re positive that “it’s only a matter of time”
Better to have it and not need it, then to need it and not have it.
Long as you don't go overboard, i think it's perfectly reasonable to have something to defend yourself with. Granted, i would think a reasonable amount of guns to have for home defence would be 1, but i'm european so i dunno