Video Game Shame

What exactly is my fascination with playing a video game 50-110 hours and then stopping when there is about 3 hours left (read: the final boss fight). I'm looking at all of my games, aand I've *almost* beat almost all of them.

Maybe I should put which game I should play (finish) to a vote.
Potential options have been omitted, including Wild Arms III since I remember being stuck in the game.

Silent Hill 2 (barely started)
Final Fantasy X (about 4 hours left for a boss fight)
Star Ocean (about 6 hours left in the game... and it belongs to my brother)
Suikoden III (also belongs to my brother, never played)