"There seems to be an assumption that the average person finds writing with a pen the most natural way to record information."

This is a valid assumption, writing with a pen IS the most natural way for humans to record information, this includes drawing figures(how do you draw sketchs with a keyboard?).

The problem is that machines don't have a brain and find very difficult to decode pen writing, the first that solve this problem will win a lot of fans.

PS: I type very fast, but I don't like the keyboard as much as pen.