I was never taught how to hold a pen correctly as a child, and self-taught the first bad method from the chart (index finger overlapping thumb). I assumed writing was supposed to hurt, and never questioned this until I was an adult because it was consistent with my perception that the main purpose of school was to inflict suffering on children.

I think this might have contributed to my interest in computers. I starting typing all assignments as early as possible, because it was so much faster and less painful. I later taught myself conventional pen grip, and then switched to a Lamy Safari fountain pen. The Lamy Safari has an approximately triangular section grip part, which forces conventional grip. I think all pens and pencils used in schools should have this design.