I'm terrible at finishing games, particularly strategy titles. To date, I think the only ones I've completed are C&C Red Alert 1, Lords of the Realm 2, and ST: TNG Birth of the Federation. If you include games where I've won the "partial victory" conditions, then I can add both Shogun & Medieval Total War to the list.

That's about it, though. As others here have said, I usually reach a "tipping point" where I know I'm essentially guaranteed to win from here on out. After that, I generally lose interest and either start another campaign or switch to a different game.

Quote Originally Posted by Xiahou
This is definitely a big "problem" for me. I think I'm a chronic non-finisher when it comes to games and it's not always because I lose interest either... Alot of times, when I actually like a game I'll put off playing it because I don't want the adventure to end yet. Unfortunately, what happens is that I take so long to get back to them I forget where I was or what I was doing so I either have to start all over, or just don't bother.
I'm guilty of this as well, especially with the few RPG's I own.