I played it for a bit. Didn't really get into it that much. There didn't seem to be a lot of "adventuring" per se, but I only played it a couple months and never got too high of a level.
I usually play casters or caster types in RPG's, and DDO was designed so that you really can't solo, and I primarily solo in the online games. Now, it's not that you can't solo because of "I suck", it's just that - for a caster- you'd run out of spells before you could get to a "rest shrine" to restock your spells.
One of my best friends swears by it though. Says it's the best MMO he's played. He said that they changed some stuff so you can solo now... has to do with leaving a dungeon not being reset.. (in the past, if you left a dungeon, it reset itself and you'd have to do it all over again). He swears by it because his wife plays, his kid plays, he plays, and two of his coworkers play... so they'd all go to his house and play together (like the South Park WOW episode).
I recently kicked up Star wars Galaxies. Been having fun with that. I'm kidna in a gaming funk at the moment though. Burnt out on NWN. Looking for a new game.
One of my gaming requirements is PvP. Gotta have PvP or I"m not even going to bother with it