Hey the 64 and GC didn't sell phenomenally, sure, but they weren't the phenomenal failures the likes of the Virtual Boy, Saturn and Dreamcast.
I never particularly regretted having a 64 or a GC, but I'm sure it would have been nice if they'd competed better and gotten more top-end titles during their lifetimes. But you know what else would be nice? Being able to fly.
"Whenever you find a man who says he doesn't believe in a real Right and Wrong, you will find the same man going back on this a moment later." -C.S. Lewis
"We all make choices... but in the end, our choices... make us." -Andrew Ryan, Bioshock
Prediction: Wii passes 360 in US between July - September 2008. (Wii supply will be the issue to watch, and barring any freak incidents between now and then as well.) - 6/5/08; Wow, came true even earlier. Wii is a monster.