I'd venture to say people are just as unlikely to clean and oil their gun and install fresh ammunition..
Au contraire! Every year, thousands (thousands!) of good responsible gun owners unintentionally shoot themselves or their buddies in the hand, or foot, or ass, or crotch, or head (that last one seldom turns out well!).
In about 2/3 of those cases, guess what they were doing? Wait for it.... they were CLEANING THEIR GUN AND IT JUST WENT OFF! So there are gun cleaners everywhere, I tell you, and my hat is off to them, having the courage to clean their gun when it is (apparently) such a risky activity.