Given the psychological effect of owning a gun, or having access to one has on a person, I honestly feel like we’re in the same mental health territory as any behavioral antagonist, like leaving an addictive substance around an addict. You take a gun and put everything it means in a person’s hands - the power, the mythology, the kind of baggage it comes with in this country - and it’s gonna have some kind of effect.
I don’t know about you, but I’ve witnessed, and am aware of many cases where drivers of certain kinds of cars - big, fast, whatever - do stupid, reckless, dangerous, even murderous things because of the feeling of power and control their vehicle gives them. It’s the psychology of the damn things that makes people crazy.
We have a phrase for it, oddly enough: “it’s like leaving a loaded gun on the table”