Why?
Most computers here are not used daily. Some are not even connected to the web.
Some not even connected to a net at all.
I got two (identical) hand-me-down "smart" phones (w/o a phone hookup). I tried them for a day, but found the small screens, my large fingers/thumbs and the limited capability mobile app/interfaces to be sub optimal to a desktop setup (old laptop running a external monitor and keyboard). The smart phones do have some advantages (Ski Tracker).