Hell, just stick them in a closet and forget them for a decade or two and they'll probably have gained value to collectors.

Or open them and play them. Now or later. I like having the "problem" of having a backlog of games to play, better than being bored (actually, maybe it would be better to get bored on occasion and use that to broaden my horizons).

Probably. I sometimes did, I think, but it was just easier to scam myself out of money and trade the games in