Because somebody needs to.
The U.S. has had a gun problem for quite some time. It’s like a nationwide addiction that no one is willing to address, much less treat. Why? Because over two centuries ago, our forefathers told us we have a right to own and use guns. (Mind you, this was written when the country was on a wartime footing on its own shores… details, details.) And today, although we haven’t fought a war on our lands for over a century, we have dangerous people among us, and we want to protect ourselves.
So we buy guns. Many of us don’t learn to use them properly… many of us don’t store them properly… many of us keep ammo in them, leave safeties off and put them where kids can get at them… but there you go. We feel safer.