It's about general safety. People having misconceptions that a gun always requires a significant pull to fire can be dangerous in the wrong circumstances. Yes, a gun with a light trigger is a thing, and people should be aware a gun doesn't always need a significant pull to fire.

Also, to get there it had to be loaded, cocked, and pointed recklessly before we even get to the trigger pull. This is why in any country with any sense at all, you need to be trained properly before you can even think about owning your own firearms. Your right to self-defence does not mean your right to be a threat to the health and well-being of everyone in line of sight.

It's not accidental, it's negligent. They're not the same.

If they're stored properly (locked in a safe, with the ammunition locked up separately somewhere else) then they're not particularly dangerous.

I don't have any guns in my house, but if I did and they were properly stored I'd be far more concerned about someone grabbing a hammer or other tool from my workshop room and killing me with that instead.

Or, and maybe this is crazy, "young dumb kids" should never have a gun in their hands in the first place. Maybe this take is crazy too, but you shouldn't be pointing guns at anybody you aren't intending to kill. They're not toys. They're not a rite of passage. They're not even tools as others (my past self included) would claim. They're killing machines. They wound, they maim, they kill. That is their function.

If a person cannot sit through boring classes and pass written tests and practical tests, then that person should not have a gun available to them. Anybody's misunderstanding of the second amendment is invalid here as that clearly points to being in support of a well-regulated militia, i.e. state national guard, so my argument is actually quite charitable in allowing ordinary private citizens access to guns at all.

And yes, I own a few guns myself. I took classes and trained with them. I store them responsibly. Because that's the bare fucking minimum.