Yeah, I've been in my fair share of fights, even after I got out of high school. Unfortunately, if you run around with a temper and a chip on your shoulder for long enough when you're a grown-ass man, it'll land you in trouble with the law

Looking back on it, MOST of the fights I ever got in were over ridiculous shit... you know, "so and so said this about you." or people just say shit to your face that chaps your ass...
The only one that I think was really worth it was when I was in high school... I was in a guitar class and I was not a fan of acoustic guitars (still not) and so I stored my amp in the classroom storage closet, along with everybody else's guitars. Seemed pretty safe. Somehow or another this dickhead who wasn't in the class laid hands on my gear one day when the teacher forgot to LOCK THE FUCKING CLOSET, and word got around to me a couple of days later. So, I went out to the parking lot that afternoon and broke the kid's nose and left him a couple of bumps on his face... got suspended for about a week. But because of the ruckus and the inevitable run in with the campus cop and the principal, I got my shit back.
I'm a lot more mellow now... I guess maybe as you get older, you don't let shit bother you anymore. I mean, there's not a whole lot someone can do to piss me off to the point of hitting them anymore... I'd prefer that nobody test that; I'd rather get along with people than fight them or dislike them.