I play WoW casually. I'm married, go to uni, work, and have all the signs of a normal life

(I think!).
It's fun if you have other friends playing it (I don't bother trying to meet people- not my thing to do in online games, haha). I spose it all depends.
I hated the idea of WoW for the 4 years it was out, then started playing it 6 months ago, and found I quite liked it. The storyline was well-written, and the quests were for the most part, fun.
Anyway, each to their own
