PvP in an MMO may be unbalanced, it may not be competitive compared to other genres, it may not get enough love from the developers, but it is still quite necessary in my book. PvP is the only thing I do once I finish leveling, and many players are the same way. Again, other genres are fundamentally superior for it, but it can still provide some noncompetitive fun with friends. I think multiplayer against other players is essential for any type of game these days, even more so for pay to play MMOs. It adds longevity past leveling for people like myself who have no interest whatsoever in raiding or any other type of group PvE.