Is anyone else compelled to finish a game just for the sake of finishing it?

I've had this happen to me twice recently, where the only reason I finished the game was just to say I had beat it. I hated practically every moment of the game, but still continued to push through until completion.

The first game I felt this way about was Terminator Salvation. Terrible game, but I beat it. A lame story, bullet-sponge enemies, "different" guns that all feel the exact same, boring characters... The list goes on. But I sat down and finished this game in a day despite me not enjoying a single moment of it.

The second game was Grand Theft Auto IV. This time around the game wasn't terrible, I just didn't like it at all. I hated every character to the point where it wouldn't bother me if they all died at the end of the game. The only reason I had to beat the game was to, once again, say that I had finished it.

And I can almost say the...

So I just got done watching The Shining on TV. I had never seen it before (like most of the great movies that everyone should see) and wow...

How can people like that movie? The movie takes forever to get anywhere, includes a lot of weird and random non-sense (most of the ghosts), and one of the main characters was played by a horrible actress. Yes, Shelley Duvall was completely horrid. And she was the most horrifying thing in the entire "horror" movie.

The movie took about two hours to finally get interesting and then it ends with the most anti-climactic ending. I think I would have preferred a cliffhanger ending instead of the actual one.

I understand the premise of the movie, and I applaud how well it broke down most of the plot, but that still doesn't make it good. Maybe there's something that I'm missing that's stopping the movie from being good, so please fill me in on anything that I'm clearly missing.