how is a touch enabled monitor useful in a non-touch OS?
Even on a touch-able desktop OS is not that useful to most.
I gave it a try on Windows and it is terribly unergonomic and less precise than simply using a mouse.
Even on laptops that perhaps sit closer to you it is easier and better to use the trackpad or mouse than keep touching the screen. I disabled the touch functionality on my Windows laptop because it was mostly the source of unwanted touches, smudges on the screen, and accidentally tilting it backwards.