And why would anyone want to get better at typing ?
I would imagine that, with practice, one could more quickly identify trends in a person's behavior and discern more information (whether it is accurate or not) about that individual. From here, the typer could use this information for whatever end he or she desires.
And why do so many people explain everything through type?
Maybe because they've found a new intellectual toy and therefore are using it for EVERYTHING, whether appropriate or not, like when someone gets a new pair of boots and wears them everywhere or something!
Human beings make life so interesting. Do you know that in a universe so full of wonders, they have managed to invent boredom? -Terry Pratchett