Regarding the ball-point pen, when I switched to it, I had to write fast, so the writing might have deteriorated from both the speed and the tool.
We now know a lot more, about what this does to a child's brain, but then, teachers just believed to be right.
One day he told us about this. And said that the result was that he could write with both hands. Different things. He demonstrated. Wrote with both hands at once, different things, on 2 neighboring boards. Kept on writing. Got to the bottom of the boards. Then turned around, began lecturing from the first board, reached the bottom, and continued the lecture from the second. He had laid out the boards perfectly to do this.
It was a very impressive party trick.
In a gradual shift toward ambidexterity, I've found that questioning society's insistence on 'right-ness' can be enlightening...
edit spellchecker : left handed scribes became left handed scones. The history of heavy baked goods in the development of human civilisation has been scandalously neglected by a blinkered academic community.
I'm not sure if that's really the cause. Furthermore in many ancient scripts the direction was quite unimportant, in some cases even reverting in each line (Boustrophedon).
Interesting take on direction of writing: http://shkrobius.livejournal.com/292987.html
To which my grandfather replied: "you had to write like that with a fountain pen"
I've never used a fountain pen, but I gather you have to maintain a fairly constant speed as the pen moves along the paper. If you want that handwriting back, I think you have to get rid of ball-point pens and pencils. Although while pretty handwriting is nice, I'm not convinced its worth the time to learn. (Which isn't to say legible handwriting isn't worth learning)