I go on the PS2 a hell of a lot more than the PS3. xD
The oldest console I still use every now and then is the Sega Mega Drive/Genesis, but I can't use it on my new TV, which sucks majorly.
I still use the K Fusion emulator for some Mega Drive games I don't own, though.

I play my older games on my newer, backwards-compatible systems. XD I play my Pokemon Leafgreen on my DS, I play my Pokemon Red on my GBA, and I play all of Semi's emulators of ridiculously old games on the PC. I have to start Earthbound all over because it was on his roommate's computer. ;A;

i disapprove of gamestop getting rid of GBA games bc now i have to order the ones i want to play on the internet... and there can be fake ones

x.x I wish i hadn't gotten rid of my GBA systems.. i miss playing pokemon silver, yellow, and red. XP even giving my DS lite to my niece recently, i'm beginning to regret. XD Like as SOON as i gave it to her, i got the sudden urge to play my old GBA games that don't work in the 3DS XP

I still play my Sega Master System and my Sega Genesis...

oh i'm so jealous. DX I've never gotten to play on a sega. x.o; playstation barely.. i have a ps2 and gamecube... i guess those can be considered old as well. xD for the most part, though all i play on is my 3DS o3o;;

As a general question, why would people not play their old systems?

pssst poe they have old gba systems on ebay... and the games too but be careful on the games(some can be fake)

I got myself a GBA SP from ebay for $60 used and it looks brand new. i found pokemon ruby, sapphire, leaf green, emerald, fire red(for kali i still need to get one for myself)

I am the manry-est of men!

This thread keeps reminding me I should buy a Dreamcast and GBA one of these days. A friend of mine borrowed my GBA and never gave it back. I don't even know where she lives anymore..

I need to pick my PS2 from my mom's place and then I want to get an NES (8-bit) with some games...

My dad has an atari system with a whole bin of games from when it was in the dumpster that some ghetto homeless people threw it out

I would play my GBA but it's gone missing :c
I play my PS2 all the time since I don't think I'll ever bother getting a PS3 or any type of XBox
I had a PS1 for the longest time but that went to my younger cousins

I use to play a lot of my old PS2 RPG games when I had my backwards PS3 console, but once I gave it to my brother and bought a slim, I haven't gone back. The last time I played a old gen console was when I turn on my Gamecube system, and that was to play the wonderful Ogre Battle 64.

yep still play on the old systems, only one I haven't played on in ages is the Playstation 1 since those games can be played on the PS2
actually even played the old N64 a few months ago before my sister misplaced the games while cleaning in the odd way she cleans... wonders where they are... maybe in a box hidden somewhere...