This is one of those things that's going to be tough for me. Thankfully our 'Stash is already plenty big enough to retire (I've realized this as I've dug into the articles here and recommended books), so I don't need to sell our game collection to pay off debt because we have none. But we have a LOT of games. My wife and I both play, we both collect, we've both worked in the video game industry for about a decade, we're very into games and gaming history (I've even been published on the subject). We're the gaming equivalent of the film aficionado who obsesses over getting "just the right print of just the right film and it must be on 35mm in the correct aspect ratio because they recolored it and screwed up the transfer back in the 60s and that's the version that everyone has."
Part of me wants to keep them. I've thought about making youtube videos talking about the history of gaming and basically dumping my knowledge on the internet, lecture style. I've also thought about trying to get a gig at a university teaching game history. I've heard of a few places that have this role, and I think I'd really enjoy it. I also want to play a lot of the games I've never gotten around to playing. We have around 2,600 games and the over 40 machines required to play them, all in working order and many in pristine condition. It's a HUGE passion for us.
But, on the other hand, we have to house all this crap. And keeping them kind of goes against the whole anti-materialism thing. So we're really struggling with what to do here.