I have to disagree with you, but the reason is pretty obvious: I tend to like every RPG I choose to play, if I'm initially interested in the game, it's quite probable that I'll like it. And I liked NWN2 as I liked NWN, and I'm speaking of the original campaigns here. I even like PoR: Ruins of Myth Drannor, and I simply don't feel them to be that bad... maybe I just get more out of them because of my imagination? Who knows.
Heh. Well, I think we're totally reverse types of players. You tend to like every RPG you choose to play if you like it initially, I hate the games that start out so well and spoils it with a bad ending
Some RPGs get better and better the farther you play - NWNII gets worse as you advance in it, from my point of view.