Some people are jumped. My brother was jumped and he didn't pull a gun and shoot anybody. Wasn't Kumar recently jumped too? I know the beastie boy's guitarist was jumped, and he didn't pull a gun. And one of our DP members was injured in a riot, and I think that would be a bad situation to pull a gun out in. If you pull out a gun in a riot, then as soon as your bullets are gone, you're as good as dead. Others will see you as a threat.
Physical confrontation doesn't simply require lethal force. I don't think times have changed, just politics and lobbyists have changed and are more powerful. Perhaps gun enthusiasts and SYG defenders would say, if you're jumped, use deadly force... that's self protection. If somebody robs your house, chase them down and shoot them or stab them to death.
Punching somebody is assault and less acceptable than shooting somebody and using lethal force. Punching somebody in the face and breaking their nose today, can and will get you killed. Sounds like a barbaric, Middle Age society where people's main concern was securing their property and wealth and preventing other armed male's (armed with mostly swords in England) attacking them or raping their wives. We don't live in such by such a survivalist code today. The industrial age made living easier for humans, and less preoccupied with violence and taking other people's resources.
Why act like we should live by such a survivalist code today? The days when a childhood fight ended with a few bruises was better than kids deciding to pulls guns on each other... and joining gangs. I'd rather see kids and adults slug it out than arm themselves and have some kind of wild western gun duel.
I have heard "old timers" say it was once acceptable to just shot somebody if they walked on your property and ignored a No Trespassing sign. Somebody told me, when he was a young guy in the south with his cousin, a guy chased them fired several shots at them. He had buck shot all over his back, butt, and legs, and fell off a ledge. Somebody else in his family was actually shot (in a separate incident). He also said his family was quick to reach for their guns and pull the trigger at random people in the hills and hallers, whatever... but today, if a young kid were chased and shot at by a stranger, that stranger would be investigated and police would be notified. That's the way it should be.
I hope we have moved past those days, and I don't like the sound of a society arranged like that. Shooting at people shouldn't be a decision made casually , simply getting punched in the face and receiving a broken bone in a fight shouldn't warrant the other person an automatic death sentence at your discretion. If you shot and kill somebody over a broken nose, expect the PD to question your actions.