I have a need for both. I use my Laptop the most as I have little room in my house and no place for a desk. However, I have a very powerful laptop and use it more often anyway as I can sit where ever and still be able to work. I do miss my desktop, I miss the abilities it has in comparison to the laptop and I miss being able to sit at a desk and be up close and personal with the monitor....lol I just can't find a place I am comfortable enough with my laptop to use it the way I did with my desktop.
I have a ton of computers in my house. The wife has a Laptop and a Netbook, I have a Laptop, Netbook, Desktop (I use it for games on the projector) and both the kids each have a desktop. I also have my old HP Laptop I still use occasionally, and I have 2 Dell 2850 Rack Mount servers and a Dell NAS setup. So yea I have a $400.00 a month electric bill.......lol