My only thought on this what the great poet Fiend said on his album Street Life: "When you war, you war for a just cause. When you war, you WAR FOR REASON."
Its worth it if you defendin yoself or loved 1
....Id like to say ill grow out of it,but seein as though I don't start shyt no more i think im just waiting on other people to grow out of they bullshyt.If you don't give a damn, we don't give a fukkBasically, don't start none won't be none

Gracies break down of a street fight starts at 4:30 seconds
" and get whomped is 
white dude went way too hard on him 
I never really thought it was worth it. People take things too far now, people don't knuckle up, fight and leave the issue as resolved. They want to kill you over pride. As an adult you have too much to lose fighting.
My cousin went to jail because he knocked a person out and killed him. The other guy started it, and it was self defense but he had to do like 2 years. When he got out the guy he had killed, friends were trying to him.