anamorphic: I still have several boxes of games on 3.5" floppy disks and no computer that can even read them anymore. I really should try selling them, but cannot even be sure they work. We recently moved house and threw out a ton of junk, but kept these useless games.

I do sell games that I have doubled up on though, and games I've finished with no desire to ever replay (which is about 75% of my list, there are just too many games to spend time replaying).