A lot of people DO prefer notebooks over desktops.
Especially if the notebook will do the job.
However, if you buy an iMac it won't get in the way, even if it too much (unless you put it into a really small place).
But an MBP is big, and if you don't need the extra power, you are taxed for that burden, with no benefit.
But I'm hoping Hanzo is correct.
I'd feel better with the thought that people are selling it after taking their full use out of their machines.