The main trouble is with physical stuff brute force wins, the poor weaker person would get it all the time, not all people actualy want to fight!!
If things were sorted out this way, the fighters would win all the time......unless we had funds to pay some one to do our dirty work then that smacks of something I would rather not have, although I do suspect it goes on more than we think.
I worked in Corby and came into close contact with a contract killer, he was after some one I was trying to protect, thankfuly he was caught and given a holiday in a nice warm place with all meals provided, in his real life he was an unwanted child where beatings were the way to sort things out, all that showed him were big people can pick on small ones!!
I dare say a few people who have been bullied or in violent relationships would certainly not condone any form of violence to solve an argument