Why Do People Type Badly?

[Bridge]

Lack of discipline and patience.

EDIT: It should be said that the majority of the human population doesn't speak English natively, and the number of people that speak it on at least an intermediate level can't be more than 75%. It isn't just a lack of discipline and patience in that case, but a lack of knowledge and practice. While I was living in Paraguay it surprised me quite a bit that many of the people who allegedly speak good English have trouble with simple concepts, like differentiating between "he" and "she".