I've long said that I believe Millennials, as a generational cohort, are the best at typing that ever has been and ever will be. We were the first generation where adults really recognized that we'd be using computers our entire lives and took steps to teach typing. But, so much more importantly than that, we socialized through typing. I had typing classes in school, sure, but I learned to type quickly on AIM and in chat rooms.
Earlier generations only really typed for business or school. Later generations socialize over phones, so they, too, only use a physical keyboard for school and business.
I guess I should amend this theory to include all tech literacy in general.