I hear that, sir. I'm in the same situation for a PowerMac, the 500 G4 Tower is still chugging along, but I'm gonna save till late spring and get a totally kick ass system with a BIG LCD etc. It's nice to be totally happy with your current system, but still knowing that when you upgrade it will feel like a significant step.
The reason that current Mac sales are slow is because since the introduction of the G4, the new revisions haven't actually added any new features. A G4-350 will do the same stuff as a G4-Dual 1.25, only a helluva lot slower. Don't flame me here, if that speed's what you're used to, then you just manage. I know the 3D apps and DVD encoding will be millions of times faster, and to be honest, if you're doing that kind of stuff on a SERIOUS money making level, you're probably upgrading once every two years anyway, because you have to.
Bring on the death of OS9 booting, firewire 2, Variable processors, bluetooth keyboards and mice, faster DVDRs, and the whole slew of digital devices. Apple will ROCK in 2003!