Exactly. Why on Earth would they default to touching something away from the screen that's an imperfect map to it when they can just touch the thing they want directly? I've seen so many people saying they don't understand and would never use a touchscreen on a laptop, and I just have to think they've not really been around non-technical adults or children.

For interacting with a UX that's designed around keyboard and mouse? I get how it's intuitive to reach out and touch something you can see, but in terms of much of the UX it doesn't make any sense.

You lose control without a desktop and mouse. I can't even begin to count the number of times I got hit with a dark pattern where an app steers me in a direction that I can't click out of because on touch interfaces, you have less control.