People romanticize touch as some sort of future pointing ui revelation.
To me, at least, it was a revelation, when I realized with an iPad, all I ever needed to interact with it was the iPad itself. No need to attach a keyboard and pointing device and monitor. Just slip the iPad into my bag, and that's all I need to think about. That's why I want touch UI to improve, rather than have mouse pointer added to iOS. I don't even much like the idea of the Smart Keyboard -- I get that people find that useful, but I think the essence of a multi touch tablet is that it needs no other accessory to use one.