The last desktop I bought was an 800MHz Power Mac G4. The last 5 computers I have purchased have been notebooks, mostly on the small side. My next computer is going to be a netbook, even if just for fun.
I'm in a different boat, my last 3 machines have been notebooks and I'm actually going back to a desktop.
Then again, my needs (3D modelling + animation) are a little different than most and the subsurfacing can be intensive on a notebook (especially when you want framerates to be as close to realtime so that you can judge timing effectively)
There's also other reasons why it's useful, More RAM, more raw CPU power - but obviously I'm on the other end of the scale... the people who need that extra oomph
The last desktop I bought was an 800MHz Power Mac G4. The last 5 computers I have purchased have been notebooks, mostly on the small side. My next computer is going to be a netbook, even if just for fun.