5. Lack of Content
Many P2P MMOs tend to release new content once or twice a year but none do this more than Blizzard. You're lucky to see new content once a year with WoW, which is bad enough considering the game seems to have bugger all do in it at times apart from grind and raid. Why is it that F2P games who make less money for their developers can push out new content once every few months, sometimes once a month yet P2P developers sit there twiddling their thumbs. As soon as you reach the max level, it seems all you're stuck doing is raiding the same dungeon/boss over and over merely because there's nothing more to do. What is it that draws people to carry on doing the same thing over and over for months on end.