There's a lot of blabla on this thread.
In many states, you have an unqualified right to safety in your own home, and these jurisdictions have "Make My Day" laws on the books. If someone is in your home unlawfully, you have no duty to retreat and imminent harm is assumed under the law. Colorado is one such state, Virginia is another. If some badguy is in your house, waste them. It's only a matter of time before they work their own way up to homicide anyway. Professional criminals don't "reform," they get shot or end up in jail. The average homicide perp has a 6 year rap sheet.
As for pulling a gun when someone is pointing one at you, actually, this is a fairly successful strategy, because most badguys are lousy shots. Store clerks do this all the time. If you are going to pull something against a gun, it has to be another gun, though. At that point, ESCAPE becomes the perp's primary goal. This is a profession for him, not a feud or a larger cause. It's about gettin his hustle on and no hood is willing to die over a $20 stick or even a big money 211. They may fire as they back up and you might get hit, but this could happen anyway. Also, a lot of thugs have lousy weapons, maybe even fake, and probably going to jam, and very often low calibre. Yeah, if it's on your dome, you're late to the party, but I've known guys who had guns pointed at them in attempted carjackings who just reached onto their lap and showed a .44 magnum and the homie took off.
The moral of the story is that you do NOT have to have IMMENSE tactical training to successfully use a firearm! Look at our friend rogers. You think those guys had training? Yet they succeed in forcefully robbing a man's money and his car in public. Why? Because people are SCARED of guns. Roberts did not want to die. Neither did the crooks. There have been ample cases of people merely showing guns and thugs who was all hard the millisecond before end up scooting backwards like Sarah Conner in T2.
The only people you'd actually have to shoot are those w/ a death wish. Fortunately, they're rare. Zahntech talks about how rights are being eroded and then we get into a discussion about how YOU are NEVER going to be qualified to get out of an armed robbery attempt ANYWAY without mountains of training and the killer instinct of Josie Wales. BOTH of these misconceptions create victim mindsets. Nobody is gonna take your gun away from you. BELIEVE ME. Once you start squeezing the trigger and the bullets start flyin by and those REALLY loud noises happen, NOBODY trying to steal your wealth is going to make it into a soldier's cause. Hell, they have to condition soldiers in the first place NOT to recoil at the sound of gunfire. Horses, too. The sh!t is LIZZOUD.