I have owned:
PS1 (donated to the Women's Refuge for some asdfagesreskl reason thanks Mum)
PS2
GBC (awesome purple one, lost in Australia by my sister . . . with my Pokemon Blue in it fffffff)
GBA SP (Cobalt blue, first system I ever had that wasn't preowned, iirc)
Nintendo DS Lite x2 (One I still have, one I traded in for FFIII and cash. A great-uncle I'd never met bought me one and didn't even know what it did. He was all 'I think you play games on it or something')
I've never been a huge console gamer. My PS2 sees little use, though that might change if I had a PS3. Still, I see no reason to worry about buying one any time soon. It's not like there are any 'must have' games on it for me. Same for the 360, though I never really liked the XBOX to start with. Too many funky-ass buttons.