The only collection I've owned that had been close to completing was the Nintendo Virtual Boy. lol- I think I had 16 games or something...
A few years ago I sold off my entire collection of video games. Save the Nintendo Wii/ Dreamcast for the kids to play. But My Saturn/TG/Nintendo(all)/CDi/Gens/MS/Atari etc etc were all sold to pay bills etc etc....
I went strictly emulation for a while for my retro gaming fix, and while it does seem to work short term,(all on a modded Xbox with 60gb HDD) It did leave an empty feeling inside. I think half of the fun I had playing my video game collection was the actual cart, instructions, and packaging. Along with the controllers and console, it just wasn't the same. So in the last 12 months I've decided to start to recollect/play, but only if I can find GREAT deals. And so far I've been getting back into the swing of things pretty well.
Last fall I fell into a Saturn and 30+games for $50.
Been finding NES/SNES/ Genesis games randomly from local thrift/ garage sales stores all the time.
Picked up a Turbo Grafx unit for $19 off the bay. (Mispelled auction TurboGraphix 16)
picked up a busted CD unit and a WORKING Turbo Power base for $15
picked up a Atari 7800 for $20 at a pawn shop a couple months ago.
Basically stole(not really) a TI/99a Computer/Retro gaming machine and 40 games for $20 at a local thrift shop.
And I think a few others, but yeah- not obsessing, and just taking things slow and finding GREAT deals is the best way to go. I now own about 15 Turbo games, and am working on picking up a PC Engine DUO to play CD games. I have a way to go before I get to the 150 game mark I was at when I sold out in 2008, I may never get there, especially with all the rare titles I owned at the time... but you never know.
Most important thing is that I'm having fun collecting, and I'm not obsessing about having every rare or expensive game. I'm totally cool with probably never owning a US copy of Magical Chase!!
just thought I'd share my experience.