devices and the trails of using Win 8 on a non-touch device have shown the results to be sadly lacking compared to the more traditional versions of Windows. Nor will a touch based system work with some of the really fine tolerances some programs need, because the point of a cursor is much smaller than a finger.
Yes, you can go through extra steps to access many of the same things as you do now, but since when has putting extra blocks in the way been seen as a way to improve productivity, it's generally seen as a hindrance.
Answer truthfully, how many work situations will using only a touch screen will be quicker than a traditional keyboard and mouse? Damn few is what I find the answer to be. I spend many hours a day either typing documents, editing them, or working images to manipulate them for cover artwork - I've yet to find any touch centric system that does that on thousand as well as my current keyboard and mouse with programs using small simple menus in a menu bar with a few common sue icons on the same bar. Also, I've not yet found a touch centric device with a 23 inch screen that I can afford - I've heard of a couple that are worth a few thousand dollars, but don't see any for sale around here and couldn't buy them if they were.