I'm starting to clear out my games. I used to see my "game library" as someone would view their library of hand picked books, but now I just don't give a shit about the physical copy of the software. It takes up too much space and collects dust. I don't ever play the stuff, and if I do, it's usually in an emulator because it's quicker and easier. I used to be very adamant about owning physical copies of games, but they're going to way of the CD.
I do still own a shit ton of old PC games. Those are actually pretty cool because of all of the extras they used to throw in like maps, tokens, mini-novels, VHS tapes, etc. I'm sure I'll get rid of those within the next few years, too, along with all of my old 486/Pentium components. It's just easier playing that stuff in DOSBox. I do plan on keeping my MIDI synths, though, like Roland SC-55 and Yamaha MU80. At least those can still be used with modern PCs and other hardware.