I don’t.
Same. I just sell them things.
Shit, that’s a thing? I’ve just been throwing them out. I make my own rips for my hard drive media player, that way I can control the quality to my liking and keep commentaries and the like.
Though really, I rarely use the physical disc after I make my copy, since my media player does almost everything I want it to (1080p24, DTS-HD and Dolby TrueHD passthrough and decoding, among other things), and it’s just more convenient than getting up and picking out a disc.
They look nice on my bookshelf though, so I rarely get rid of the discs once I make my own digital copy.