I find a touch screen OS on a desktop to be horribly inefficient
The most annoying thing to me: "There's a piece of lint on the screen. Crap! Now the computer's gone and done something!"
:) Reminds me of the transition from using DOS to using Windows Explorer for file management. Click/swipe/whoops... where did it go? When you're walking a neophyte through something on the phone, at the DOS prompt it was easy enough to instruct someone how to do something.
I personally think that every school kid should spend their first year on a computer at the DOS/CMD prompt. It leads to a much greater understanding of the file system.