Used to be my guilty pleasure then drug back during the Burning Crusade years. After the first time turning friends down going out to raid, I deleted all my chars and uninstalled. Though to this day it's still the best cardio I've ever done. I simply forgot to eat. I'm still a bit of a WoW lore whore so I recognised 'Frostmourne'.
I still play, quite a bit up until the last couple weeks. WoW took a sharp nose dive after wrath, MoP is better but still feels empty... the PvE in MoP is random and pointless they kind of broke world PvP.
Im a much bigger fan of the big warcraft picture though, I still go back and play Warcraft 3 and Frozen Throne, the storyline is killer.