I beg to disagree, which I am entitled to after two years of intensive usage.
With win 8, and without even involving any finger or tactile screen :
- Getting to an app is easier - windows key and one click
- if you forgot where to click, or if the app is missiing on the welcome screen, just type its name, it is not even needed to bring the search app in focus!
- inside an app, you get immediate access to common options with one dedicated key (on recent keyboards of course) or by swiping the right side with the mouse
The only significant "investment" with Win 8 is, organizing the welcome screen the way you want, not the way M$ wants, and M$ would let you do this. See attached example from my own laptop. Now with Win 10, we are back to the "desktop" where it is not even possible to group icons ! unless of course you invoke the "tablet" mode, inherited from Win 8.