Man, there are a lot of good systems missing from the list. I still have my NES and every so often I will pull it out. I still remember where every heart container is on both quests of Legend of Zelda and can beat them both in a could of hours without dying. I remeber the pattern to beat Super Mario Bros. when you get to the repeating part of the castle. And I could go on and on.
I agree the SNES had better games and I love that console too, but the amount of enjoyment that I got from the old NES back in the day is immeasureable.
Does anyone even remember something called the Vectrix or something like that? It was a little home arcade console with a built in screen? It was black and white and to get color, you had to use the plastic over-lays? It was pretty cool too.