For me, it was just WoW. It's a beautiful game, and it was a wonderful experience to see the entire WarCraft trilogy up close, but I'll never play it again. Unless I find a single-player version someday (I almost never played PVP anyway)... But that will be someday, when I have a lot of time to waste :P Let's just say this: in my opinion, addictive practices should be banned (especially the use of psychologists, as was done in WoW – to deliberately make people sit for as long as possible and be as fatigued as possible). There should be billion-dollar fines for this.
RE: The MMO that truly addicted me