Never played WoW, love the Warcraft series - played all of 1-3 plus expansions, but never played a pay-monthly MMO. Keep seeing this advert on TV though and its making me quite tempted to trial it.
I still play WoW, believe it or not.
I do recommend you try it. It's pretty good gaming experience and the social side of it can be great. If you ever give it a shot - let me know. You could join the server I'm on and I could lend you a hand should you need it!