So, what's going to happen if...
a) you kick his ass - or
b) he kicks your ass
If he wins, he's going to own you and he's not going to stop being a jerk about everything. He's also going to know that he can kick your ass whenever he wants to, and he's going to continue to do it.
If you win, he's still probably going to be a jerk about everything, and he might even escalate the fight. He could bring some friends to ambush you, upgrade his attacks, etc. etc.
I'll reiterate my original movie quote.
"Nobody wins a fight" - Dalton, Roadhouse.