The fact of the matter is, running is a tactic, nooby or not. If you don't like it, learn to counter it. I completely agree with danoob. It's not running when you're ahead, it's being smart. If you ran while you were down in points, you are DUMB. If you think style is more important than winning, or if the replay is the best part of the fight, then sparring and private servers are for you. Don't go anywhere near a server that involves tc, because you're just gonna get frustrated and say, "Fuck this, I'm (insert something irrational here) RIGHT NOW!"
Running isn't bad. It's a tactic used for winning. It's also not called running of you're not capable of coming back, whether it be because you aren't skilled enough or because you have too many fractured joints, etc.
I run in tournaments. I'm a 3rd Dan Black Belt.
I don't run when I'm having fun with friends in a private server.