I never left Nintendo - but I don't do the bulk of my gaming on their hardware.
Still - I've got a 3DS, and 3DSXL (Along with the requisite Wii I bought at launch with a stack of unplayed games :( - and multiple DS's/DSXLs, GBA/SP's, GC/GBPlayer, SNES, NES) - and pretty hefty collections for each (probably around 40 Wii Games - 50 DS games) - but still, I don't play them as often as my main console this gen (360).
But I'll be damned if I ever leave Nintendo! I love their software and hardware, their aesthetic and their characters - and have done ever since I played Donkey Kong handheld in the early 80s. I'm sure I'll get a Wii U within the next 12 months too, out of duty to Ninty - even if it becomes my secondary console - because - Nintendo.
Don't ever leave Spurge - sure don't put ALL your eggs into their basket (I haven't since my Megadrive become my most loved console of 90-92) - but godamned if they don't have some tasty eggs.
Nintendo - stay foreeever.
