At first, I loved Morrowind, but I gradually found out how shallow it was. The game lacks atmosphere and depth. There are no ambient sounds and the NPCs have not rountines. You can always find Bob at the Corner pub, no matter what time of day. I also found the combat system quite simplistic. But the worst thing was the game balance. I found it damn impossible to play through the game as anything but a warrior. Mage/wizards are ocasionally effective but it's impossible to get anywhere playing as a thief. The game is much too combat oriented and your thiefy skills are very difficult to increase. Still, its a fairly good game, with pretty graphics, a good story and lots of stuff to do. The editor is also very nice, although the scripting language is feeble (no modulus operator! #!@$#@%@#%@!).
There was only one catch and that was Catch-22