I sold about 90% of my shit and I couldn't be happier.
Paid off my credit card debt, my cell phone bill, and the rest is going into the bank to finance my move out of state. I think I've made at least $4,000 + selling all my games, and I'm not even done yet.
I barely have enough time for the current gen stuff, there is no way I was ever going to tackle some of the games (I saw Tactics Ogre mentioned) I had collected - I had to clean the dust off a lot of this stuff.
I think I miss maybe 5 games out of 800 that I sold. Every day I find more and more shit I can live without and I just sell it.
Because really, who is that big collection impressing? Just a bunch of random internet people? And most people will never have time for the 1,000 + games in their collection, because most games are multi hour extravanganza's. It's different with other hobbies, like let's say stamps, because it dosen't take 10 - 40 hours to look at a stamp.
I'm liking gaming a lot more now that I'm buying to play and not to "collect", and that I'm buying a game for fun rather than "omg low print run gotta buy it even the game itself is mediocre garbage!".
But just wait until the money starts rolling in, because having the $$$ sure beats a bunch of games collecting dust on a shelf.
FYI - moving 1,000 + games is a HUGE pain in the ass too.