N-Gage-if that can even be considered a game system; or any cell based games for that matter, like the iPhone with Crash Bandicoot Nitro seriously? It's called the PSN folks
And just about all consoles before the SNES, emulation is so readily available that there is little point in buying an older system just so you can play the games, now collecting for the sake of having the original systems that I can understand but the older systems don't really have anything that jumps out at me and says, "Look I'm a game that will make you want to spend an arm and a leg to buy the entire system!" granted there are a lot of good so-called "old school titles" but as far as going backwards, I dunno.
In retrospect, while everyone else grew up with the NES and the SNES my first systems were the GBC and the N64 when I was like 8 then I jumped on the PS2 bandwagon and never looked back,PSP, XBOX, GC, PS3, PC and so on... Not too much love for the oldies.