No point in mincing about the bush.
Just say what you mean.
How do computers work on the Planet your from -- obviously not the same as this one.
Touch might be OK for a HORIZONTAL surface (like using an old fashioned pen and ink system writing on a paper tablet).
No way you could use this stuff with a VERTICAL facing monitor -- especially if it's a large 50 inch plasma backlight screen -- you'd probably be sitting too far away from it to touch it even if you wanted to smear greasy fingers over a 1200 USD plus piece of hardware.
As for Horizontal touch devices -- even a stylus isn't as efficient as a keyboard -- most people can type many times FASTER than they can write - even with a stylus --although some of these aren't that great as pieces of hardware either.
I could use a stylus to replace a mouse for say applications like Photoshop -- but try any decent "cutting and pasting" using anything else than a mouse.
No thanks, my mouse and keyboard work perfectly.
Why on earth should I go buy something else.
Particularly something that brings no benefit - quite the opposite - imprecision.