I once worked for a guy who couldn't understand how anyone could possibly "write to think". He'd had a career as a high-level consultant who thought in big-picture/hand-wavy terms and never had to worry about implementation.
Even though I'm a big picture type of a guy but I LOVE writing in general and one of the driving forces behind this strong feeling of appreciation for writing is that it makes you think clearer and help too with expressing and understanding your emotions esp. when delving into touchy subjects.
It was not a fun time.