[mapleoin]

I don't see why the mouse should be tied to the keyboard. They're used for different purposes. We use mice to point stuff in a specific place on the screen. It would be much faster to do that by just putting your finger on the screen (and more intuitive, since we already use our fingers like that). I think the time it takes for my hand to move from the keyboard to the mouse is about equal than it would take to move it to the screen.

[logn]

So assuming you're using a physical keyboard with a separate monitor, you would prefer to extend your arm out to your monitor? I think the mouse would be much faster and a trackpad below the keyboard is faster still. Further, the mouse is more exact, doesn't obscure the image, allows quick access to right-clicking, and doesn't leave smudges on the screen (though I see us solving that problem).

[nooneelse]

Also, a mouse is quite handy if the screen being displayed to is far enough away that one can't, in some common use cases, touch it comfortably.

[knowaveragejoe]

Your finger is fat and imprecise. Also, ever heard of gorilla arm?