[bad_user]

The way you move the mouse has less to do with how you interact with the interface - yes, you may be able to optimize mouse moves, but that's not enough.

What happens is that a mouse-friendly interface is organized in such a way that finding the right action to click on involves traversing a tree of choices. Even if you memorize the exact location of the action you want in that tree, for many actions you still need several clicks to perform something instead of just one.

And that's not the end of it - you clearly need keyboard input too, in many cases. For example in WYSIWYG editors, you type-type-type, then you need a new header, move your hand on the mouse, select the right header in the select-box (during which your eyes also move from the current line), then get back your hand in typing position and start typing again, until you need another mouse action.

This is the reason I wrote my last resume in HTML and didn't even bother opening office, even though HTML sucks for typography (I'll probably switch to Latex next time).

That said, the mouse is better for browsing around, exploring stuff or for interfaces such as Photoshop. I also don't mind the mouse for interfaces where I don't need to be productive. Someone mentioned CAD in this thread - I disagree as AutoCAD is more productive with keyboard input.