May I ask if you always intended on buying other platforms after you purchased your Wii/Wii U?
I figure thats where all the non-nintendo games will be in the future but right now I think PS3 and 360 are far more appealing to me and I still have a ton of gaming to get out of those systems. Right now Xbone and PS4 don't have anything I am interested in and Wii U has plenty.
Thinking back on it I sort of stopped caring about PS2 when online gaming became the big thing and everyone was playing SOCOM. Never took my PS2 online. MGS3 was the last game I remember getting on it and even though I had beat and enjoyed to first two MGS games I could not get in to the third game and I just didn't have much time for gaming anymore. The Wii came out right when my oldest kids were first old enough to start playing games and we had a blase with the thing.
I used to love Nintendo Power and then I was a regular reader of PSM. So I guess I sort of checked out of gaming in general in the early 2000's when I was working full time and going to school full time and having kids until my kids were old enough to play. I don't like FPS and I don't like to play online very much and the Wii was an excellent gaming system for me for years and now I am enjoying the Wii U because the end of the Wii cycle was pretty bare.