I suspect it is easy for true genius to become frustrated with the efforts of mere mortals, which could explain why someone like Jobs would be difficult to work with ...
Dien, you put it very well, how much his vision has changed our every day lives.
What will become of Apple now? I think the arrow will trend steadily downward.
My initial reaction was to go out and buy an iSomething in Steve's honor. Alas, I can't afford one!