It's always interesting that you have to live in a country where both Joe Public doesn't own a gun and 99.9% of criminals don't either to appreciate how truly scary, dangerous and uneeded they are. Arguing with those that live with them is pointless as for some reason logic and common sense mean nothing to those supporting them.
But...IMHO it's far too late for the US to just 'ban guns'. The huge availability really does mean the crims will still have them and the public not which makes it a tad one sided. Of course that's not a problem in countries where the crims so rarely have them in the first place
You've dug your hole....