biggest flaw in mmos is not the grinding and time spent.
even whoring boring kills for hours on end can still be "fun"
however i dont like how most mmos have that "end game" gear your trying to collect. that you cant use or get till you have gotten that highest level and have already killed the strongest things. leaving epic items useless other then some personal treasure hunting glory.
the best mmos have endgame that is added community interaction and minigames you cant even take part in till your an epic player.
not money and items