I bought my first Xbox 360 on launch night, November 22, 2005. I have gamed the crap out of it, to the point that I'm on console number three now (Thanks, Microsoft Sam!). Every year, I buy a bunch of new games, several classics that I didn't have time for in the past, and I download a handful of arcade games.
(Side note: Pac-Man Championship Edition DX is amazingly awesome and fun. Go buy it now. Then come back and read the rest of this.)