Yes, I am late to the party. WoW's release and most of its life cycle coincided with the beginning my own very time-demanding graduate education. I played a trial account (of the old, 10-day sort) in 2007 and loved it, but didn't have the courage to commit to a subscription.
It was the October 2011 Brazilian release, complete with promotional prices and hilarious translation, that sealed the deal. I broke down, bought in and started a character in the main Brazilian server and played for a few months; because my play time is limited I have yet to reach the level cap. In the last few months my wife became interested, and opened up an account of her own; I created a new character to level up with her and we're having a blast.
Compared to my limited experience in 2007, I see a lot of improvements. The Dungeon Finder facilitates PUGing and opens up additional contents for casual players like myself (PUGing's still a Russian rolette, though, you can land with some great people or with a bunch of assholes. C'est la vie). The revised quest chains have more backstory and continuity to them, easing the "grindy" feel somewhat. Oh, and I still suck at PvP, but capture-the-flag battlegrounds are a lot of fun.
My original character is a Druid, which is a one-man party really, but I really enjoyed tanking dungeons. Right now I'm playing a Warlock, a class I chose based exclusively on style and fluff, and even though the WoW forums seem to be teeming with butthurt over the serial nerfs the class has been getting since WotLK, I am still enjoying myself immensely, playing a rotting zombie that summons demons and steals people's souls. When I cap the Warlock, I might try another tank, like a Death Knight, or a Paladin (which people assure me is the absolute best tank in WoW right now), or maybe even the much-maligned Warrior.
Anyone else around here still playing (and enjoying) WoW?