I recently quit WoW, and moved on to GW2. One of the better decisions of my life. WoW is becoming a ruined game, in my opinion, due to the way that Blizzard is making the game ridiculously easy.
I understand that every player wants to have full T13 gear, but if they truly lack, then too bad. Seriously. A couple of weeks ago (just after the 5.0.4 patch) my DS group wiped on Madness because of too much DPS. Yes, that's right. Too much DPS on the main tentacle turned our raid into an episode of hentai, with the amount of tentacles (amongst other adds) spawning.
Also, the amazing graphics (in MMORPG terms) make it very appealing as well.
I've only been playing for 2 weeks now but the overall smoothness of the game makes it amazing, with features like the dynamic task/event system, PvP in general, as well as the sheer epicness of World vs. World combat.
Those damn French -.-