I don't collect to collect. Sure If I see a loose 2600/7800 cart I don't have for a buck or two, I'll buy it. I have every Atari console, including a 400, 800 and XEGS, but don't really collect for them other than buy games (as above) or homebrews that I will actually play. I see 2600's and/or lots going for way more than they should. All these kids who find them in their parent's garages think they have something soooo rare.
I have a NES. SNES, and N64. Most of the carts I have are what I play and most are 80's arcades. I did collect a lot of the controllers for the N64. I really had that for when my son from my first marriage visited. He had one at home, so only had to cart the carts when visiting.
I've recently just found enjoyment with the SNES. That came to be via marriage, it was my wife's brothers who passed away, so I felt the need to keep it. It only had the game boy adapter and super mario, which I really cannot stand to play. I added Dragons lair and Space ace but then it went into the closet for years. I recently found Classic Kong, so bought a copy of that and the Midway classics and Atari classics carts for that. The Asteroids is nearly perfect... The Classic Kong rocks. I guess the SNES is my current favorite, but other than maybe building an asteroids and/or defender controller for it, I think I'm good for games for that console at a whopping 6 carts.
My NES comes out for parties, because everyone knows NES. Again, mostly 80's arcade titles there. I got it for five bucks at a goodwill clearance center. It was dirty as hell. I cleaned it in a hotel room (I was on a business trip) replaced the connector and bought about 15 games for it. I hacked a controller board into an Atari CX-40 joystick so I could kick my kid's ass at games on it.
I have a Genesis and a Dreamcast. At one point I bought every DC accessory available, including the VGA adapter, hacked a controller to be able to plug in a CX-40 to it and built a pretty good collection of Atari emulator disks for it. I never was able to find the broadband adapter for a reasonable price. My Genny cart list consists of mostly the arcade classics. No surprise.
I still have my original C64 and Vic 20's plus an Apple][+ and a shit ton of floppies for all of them including the Atari 800.
Not everyone is stating their Demographics which is the OP's question. I'm 50, have engineering and business degrees, and comfortably self employed with a wife that rolls her eyes at my game collection...
Edited by Zonie, Thu May 25, 2017 8:35 PM.