Played it once, got sick of it fast; it was soooo boring! All you do is run around, thwack enemies with turn-based combat and fetch crap for all the NPCs you encounter, and by the time I started playing WoW, I had already done a lot of that in much deeper games where such gameplay was reserved for sidequests, not the main game, and you don't have to play subscription fees for those games either.
I even think my brother (the guy who bought WoW) has quit playing it, and he's pretty content playing generic hack and slash titles like Diablo 3 to no end.
That said, I do love the concept they were going with, and the world (well, the Blood Elf part of it) was pretty cool to run around in... just too bad there's nothing worth doing in it, especially for the price you pay.