Why do we insist calling MMO's -especially this thing we dubiously call MMORPG- a game? There is nothing game-like in the whole concept. Well, as much as there is game-likeness in normal pen and paper RPG, which is neigh, too.
So, why on Earth do we call MMO a game? It has no winning condition, it has no game like rule sets and it's -well- endless, ever continuing.
MMO is not a game in the traditional sense for lacking the specific win condition/end of game. Role-Playing, yes, if we take into account the fact that we are basing our decisions in game on the possibilities our character has. But game, no.
But what is it then?