It has come a long, long, long way since beta. It is now a very solid, meaty, fun MMO that has enough content to keep you going for an insane number of hours without ever repeating a quest... and the quests are rarely the usual "bring me 10 bear asses" MMO grindy quests.
Also, if you liked Morrowind at all (the 2002 Morrowind), you will adore how faithfully they rebuilt it - almost building for building - in ESO.