I've had my PS3 since launch, but I got a Wii at about the same time you got your PS3, and I kinda feel like you. I've been very pleased with my purchase since I got it and played Galaxy and Twilight Princess. But looking ahead, I'm glad I still have a PS3 b/c there's not much at all on the horizon for Nintendo's system. The PS3 and Wii make for a great combo.
My Top 5:
Shadow of the Colossus, Metal Gear Solid 3, Shenmue, Skies of Arcadia, Chrono Trigger
My 2 nex-gen systems: PS3 
and Wii 
Prediction Aug '08: We see the PSP2 released fall '09. Graphically, it's basically the same as the current system. UMD drive ditched and replaced by 4-8gb on board flash memory. Other upgrades: 2nd analog nub, touchscreen, blutooth, motion sensor. Design: Flip-style or slider. Size: Think Iphone. Cost: $199. Will be profitable on day 1.
