I feel wrong for saying this, but I wen't to a friends house once and experienced the entire Nintendo thing then and there. We played Mario 1 and 2 on the NES, and he had a bunch of other games, most pretty Japanese and obscure. We had genuine awesome fun, and there were those moments where t seemed nothing was going to work, until to wiggle things about and blow through everything.
Then we played the Wii, and while I got good at the NES Mario Games, the Mario games here just felt wrong and… tired actually. We then played a version of Smash Bros. for N64 and I got destroyed in every round except one, but that was just because I was spamming a move on this one character, and pissing everybody off. They were arguing, and trying to figure out who the pink guy wrecking everyone so unfairly was to which I replied along the lines of "I NEED TO WIN SOMETHING SOMEHOW!".
So the NES was awesome, the N64 showed some promise, although I was not in the zone, and the Wii just felt tired. I know these conclusions are pretty harsh considering I only played 1 or 2 games per platform, but they seem like reasonably acceptable statements to me…
EDIT:
It is nice having good looking games, and your screenshot looks nice and all, but I'm going to need a lot more than that to switch sides…
http://www.youtube.com/watch?v=o908SWJ8ulc
I know Nintendo have their good games here and there, and although I never got into them (or played any of them) I accept that games like Ocarina of Time may very well be the greatest games of all time, sure. But personally I will always stand by PlayStation, because games like inFamous, Ratchet & Clank, Uncharted and Metal Gear have always meant more to me… and let's be honest, Metal Gear and Nintendo have had poor history. 