So who wins the match if no one gets knocked out?
By the way, again, many people box to get/stay in shape. Boxing isn't just getting into a ring with another person and trying to injure the other person and knock him out.
Yes a knockout is an instant win but I am positive many, many boxers thought your way and got their backsides handed to them by a "boxer". You are thinking of a "brawler".
Read up on Holyfield fights. He was a boxer and I highly doubt many would label him a brawler.