So why are you worried about gun bans? You can just use a knife instead.
I think you must know, really, that guns are more dangerous and effective than knives. That's why you want the right to own one. It's also why the US has frequent mass shootings in schools, whereas there are no instances of mass stabbings in UK schools.
Just look at the recent terrorist incident in London. The guy killed two people with a knife before being restrained by unarmed members of the public.
>And I don't have to kill them if I pull a gun on one
The first principle of responsible gun use is not to point a gun at anything you don't want to kill.
As you illustrate, hardly anyone is capable of using guns responsibily.