I think they are a fantastic idea even for those of us who do... Just because they are easy to use and user friendly does not mean they are not sophisticated computers... even more sophisticated than Windows machines.
This attitude that Macs are somehow "lesser" computers than Windows machines is perpetrating a myth.
When Apple produced a Unix (BSD to boot) workstation
with the Mac pretty face I was won over.
I had just tried to do video conversions on my XP pro (Intel 3 ghz) :
I ran the program ten times ,
it worked twice and locked up eight times.
I now have a 17" Power Book
with a FW LaCie 16x DL DVD burner
and a LaCie FW 160 G HD.
What a great Unix workstation and Intuitive interface.
The only product that I would recommend
to every Mac user is Disk Warrior.
OBTW I've been engineering computer systems for many many years.
Thats great. Good luck to ya.