I gave up on WoW, need to find another MMO to play when not on XI. Any ideas?
Try LoTRO. I just started and so far, it's pretty cool. Fuss-free lvling and cool graphics.
Or if you like PvP, pick up WAR. I've played for about a month but didn't like it because I hate PvP. Crafting system is a bitch.
You can try Age of Conan. I played it when it launched and it was buggy as hell. Nifty combat system, very nice finishing moves and full frontal nudity. Not sure how it is now but you'll need a monster of a PC to appreciate the awesome graphics of that game...oh and did I mention boobies ?
And there's always Guild Wars. Free to play (have to buy the game though), beautiful graphics and a cool story. Again, I played when it launched and loved it until it got stale. Haven't played the expansions but judging from the reviews, it's a pretty safe bet.
Did you give up on WoW before or after Wrath of the Lich King ? If it's after, then I wouldn't recommend going back but if you quit before the latest expansion, I would recommend that you go back for one more spin. I personally love this expansion, it kinda got me back to playing WoW when I gave up during Burning Crusade (which sucks so much that it'll beat even an industrial sized vacuum cleaner).