The hardest thing to do for an athlete is to step away and admit they can't compete anymore. It's even worse if you're retiring young from failure. We all have given Vick a ton of shit for his smack and reveled in his knockouts, but good for him that he's aware he needs to stop fighting and taking unnecessary damage or getting knocked out again and again. He had enough balls to go in there and fight, which is a lot more than most of us can ever say.