Kitty
Senior Member (Voting Rights)
Going the other way, if you need better than average computing power, a desktop unit is probably cheaper than the same power in a laptop.
I agree, this is an important consideration for some folk—laptop screens are particularly expensive, and make up a biggish chunk of the cost.
I just use one because it needs to be portable. I'm away from home on a wildlife trip at the moment, and I sometimes want to be able to view and process my photos in the evenings. If I didn't need (a) something that's easily portable and (b) doesn't take up much room on the sofa either, I'd probably use a Mac mini plus screen or something.