Quote Originally Posted by Bakis View Post
PvP server.
There is your reason.

PvP's main purpose is obvious and it also emphasize on the war and hatred between factions, imagine what the game feeling would be if ppl ran around with little dont-hurt-me-capes.
Funny fact. The PVE servers, where you can't attack other players in the world unless they are pvp tagged, are tagged Normal. Meaning normal servers are actually what the faction conflict is supposed to look like. And the PVP servers are more tailored for pvp, hence not "Normal". ;P