What do you think about WoW?

I think the level of quality and updating that WoW does mostly justifies the cost. I've played free to play online MMORPG's, and the quality is always horrible compared to WoW! I even tried Guild Wars, which you buy but don't have to subscribe to play, and it just didn't hold my interest. With the races, classes, professions, zones, quests, skills, talents, and everything constantly being added to and updated, I just haven't found any other game like it. Granted, I would like for it to be a little bit cheaper, but I still play at the current rate, so I guess I don't care that much.