[WiseWeasel]

I think the touch input is simply much less practical for certain repetitive tasks than a mouse and keyboard, due to the ergonomics. For text editing, lifting your arms from the keyboard area of the screen, or from a Bluetooth keyboard, to scroll the page, select a tool, insert the cursor, select some content, etc. is much less efficient than reaching sideways for a mouse and scrolling its wheel or clicking its buttons, with only subtle movements needed to position the cursor while you rest your hand on the mouse. It is both tiring and tedious to perform certain tasks without a mouse, and until eyeball tracking is workable, you're still going to want a mouse and keyboard device accessible.