We’d be better off if the bleeding edge of weapon technology were the pointy stick — not just because of atrocities averted. Also, we’d all have to be more capable in such a world — there is no imposter syndrome among people who have to kill a deer or fish with a spear they hewed themselves. Also, if you are cheesed off with one or more people (or the world,) it is entirely different (and more calming) decision space if one has to go out spearing them individually than if one can spray them with automatic fire from 50 feet away. You’d still have the option, but you’d have to want it more and to accept the inevitability of consequence more fully. Finally, it is quite hard to run an authoritarian dictatorship if your army has weapons of similar capability to any random person.
I don’t know for sure whether “an armed society is a polite society,” but I suspect it is if the pointy stick is the pinnacle of armaments.
I know this makes it sound like I was around in the pre-Bronze era. I was not.
Tiger Riding for Beginners 