That's only an argument against using it as the primary interface. There have been many, many times for me where it was so much easier to reach for the screen and touch a button, than to reach for the mouse and maneuver the cursor over the button to click it.
It shouldn't be the only way to interact, but as an option, it's awesome.
Yeah, as I noted elsethread, I use a proprietary drawing program thus, and it allowed the program to work w/o keyboard shortcuts for years....