The game is full PVP for a reason. Yes, you'll be PK'ed, it's not really "mindless" because once you hit level 21, what else is there to do?
I'm not saying that the goal is to reach level 21 so that you can walk into a town and kill whoever you want, but even my gang with most people under level 10 likes to PvP every once in a while. Though, most of the time the goal is to find somebody wearing combat armor or metal armor that has a lot of HP and kill him. Because really, those guys are assholes. Especially when they shoot at anybody they think they can kill, even if they gain nothing from it.