Obvioiusly not enough guns to make them safe yet.
I know all about "more good guys with guns" how about less bad guys with guns?
How do they not look in the mirror and ask "We have the most guns per capita and yet firearms are the leading cause of death for our children. Maybe we should do something different"
I thought the leading cause of death for young adults (Sub 40) was OD, but point taken.
We all like to be right, right? If I buy a new tool I like to use it as soon as possible to prove I made a good decision. A gun is a tool for self defense so go to a ghetto flashing a wad of cash to prove you did the right thing. Mindset.
Bumper sticker: "If guns are made illegal then only criminals will have guns." Sadly it's true. First you have to disarm the bad guys. How?
Gun ownership, carry etc doesn't go back centuries. I saw a 1950's film noir "Plunder Road" and a thug looked suspicious because he had a gun. Now he'd look suspicious if he wasn't carrying.
For further study: Paranoia, racism, self importance, narcissism, corporate greed, consumerism, etc.
As long as people want kill each other they will find a way, knives, rental vans, poisons, subway pushes, drownings etc. Fixing the urge to kill makes more sense but that takes facing reality.