I really want to buy Crimson Skies and Links 2004 for the Xbox, Ultimate Muscle for the GameCube, Mario & Luigi for the GBA, and dozens of other titles... but haven't. It's not the money -- if I really want something I'll go out and buy it -- it's the simple fact that I have tons of other games I've yet to play. For instance, I bought Prince of Persia: The Sands of Time, Beyond Good & Evil, and Civilization III all about the same time, yet I haven't played them once! So how can I justify to myself buying another game when I have perfectly good ones sitting unopened on my shelf?
So, with that said, what games (or peripherals) have you been meaning to buy but haven't? And why not?