Automatics and other weapons and explosives already require heavy tax stamps and long approval processes. I’ve also needed a weapon multiple times in my life in multiple states. I suppose people who live in a sheltered utopia may never need one but I certainly have, along with many people I’ve known including my father. Wildlife, humans, wild dogs even in cities (pepper spray isn’t a guaranteed deterrent, but I go for switchblade first with sidearm as backup), etc.