I'm quite happy that there aren't any decent MMO's out there at the moment as I tend to throw far too much time away on them - but a really good one only comes along so rarely - EQ and DAoC still play better than WoW imo, or would if they still had large enough communities.
I was amazed to discover recently that
Horizons: Empires of Istaria has survived all this time - I reactivated my account the other day and flew around on my Dragon for a while - it looks very dated now (it must be approaching its 10th anniversary) - but it was a nice little game and still plays quite well and has a very die-hard community who are still keeping it going.