What happened, why did teens go from a boxing match to a gun battle?

What happened to the good ol’ fashion fist fight? When I was a kid and we felt we had to settle a beef with someone it was usually with a fist fight. Someone would call the other out back of the gym, or the football field after class and the one called out 50% of the time went. The caller out would have 4 to 6 of his/her friends and the called would have 4 to 6 of his/her friends. Then there would be a crown who got wind of it on the grapevine. The friends on either side would be there just to keep other people out of it, watch for teachers, and make sure there was no cheating. If there was no decisive winner after about 5 to 7 minute the friends on each side would step in and break it up saying ”enough”.

What happened? Though solving a conflict is better served without fighting, but these days many kids do not want to fight, they just pull a pistol and start shooting. They are afraid to see blood up close because it might be theirs? They might break a sweat if they fought with fist? They just have so much hate for who they have a beef with? They are afraid their expensive designer clothes would get muffed up? What made them go from a boxing match to a gun fight?