I know the feeling. I have some 40 PC games, 20 SNES games, 14 Dreamcast games, 18 Gamecube games, 23 Xbox games, 17 Xbox 360 games, 6 PSP games, 6 GBA games and 4 Gameboy games. Of this collection of 148 games I have completed a grand total of 18. Just over 10%. Admittedly this collection contains games like Tetris and the Midway Arcade Treasures disc for the Xbox which are for the most part, infinitely replayable puzzle games. But that's still no excuse.
Of the ones I have completed the list of names is quite impressive. Jade Empire, Knights of the Old Republic, Neverwinter Nights, Resident Evils 2 and 4, Deus Ex, XIII, Max Payne 1 and 2, Medieval Total War 1 and 2, Rome Total War, Dawn of War, GTA III and Vice City and the list goes on. That must represent a good couple of hundred hours of gameplay in the first 5 alone. Immense satisfaction was gained from each one.
Of the rest there are a few that are almost completed but I'm holding off completing them because I don't want them to be over. These include Crackdown, Bioshock, Fable, Halo 2 and Metroid Prime 1 and 2. I have this foolish notion that if I leave them alone then they'll somehow get longer. Unfortunately, by the time I come back to them I've forgotten almost the entirety of the plot up to my save. Why do the good ones always seem to be too short?
With some I do have a valid excuse. My 360 is currently boxed up for UPS to come and take it back to Microsoft so that it can have the life breathed back into it. That only accounts for 17 though.
As for the rest of the 148 games, most of them weren't that good anyway. True Crimes: Streets of LA for the PC was just a downright stupid purchase and I just bought Enter the Matrix because I had heard just how bad it was and I had to see for myself. I lack patience if games are just not as good as they claimed to be. Just Cause in particular is far too repetetive for me to ever be able to complete it even though I am neurotically thorough.
I am still determined to complete Ninja Gaiden though, even if it causes me to have a stroke and leaves me paralysed and dribbling for the rest of my days...