>Laptops have small screens and poor ergonomics.

This is a huge gripe of me and my wife. Growing up we all had desktops in the computer lab at school (elementary+) and you had decent size screens. Now kids pull up their little 12" chromebook in their classroom. Kids have eye strains, myopia etc...

We used G3 iMacs with the puck mouse until high school. You can't convince me it was the epitome of ergonomics.

They were an upgrade from the Mac LC II. I don't recall those having very big screens either.

15" and 4:3 was about as big as it got in high school. A computer on a table and we sat on a normal plastic school chair.