I normally have an undying desire to finish games no matter what, even if just for the sake of finishing them. Doom 3 was very pretty, but I just could not finish it. The game was more repetative than the origional Dooms, and that is saying a lot.
I am glad I got to see some of the special effects, but special effects do not make a game. It felt like Unreal2 in that sense. I actually did finish Unreal2, but I am not sure why, the game was not any better than this one.