According to the DOJ there are hundreds of cases of DGU's(defensive gun uses) per day in America and most of the time not one shot is fired.
Of course you will never hear about this from the anti-gun media and the only reason they are talking about armed self defense now is because shots were fired which is rare and a violent criminal got killed which is even more rare.
Even most violent criminals are smart enough to get the hell away when faced with an armed victim and the ones who aren't are the ones we get to hear about.
That's my home state, and if someone tries to jack me in the driveway I'll show you why that is a bad idea...even though I'm not in the the Show Me state.