A priest, a rabbi, and a shaman walk into a bar...
Full disclosure: none of the titles I've held professionally have officially included the word "writer." However, I am a writer, so it's always part of what I do.
Professionally, I've researched, analyzed, reported, presented, submitted, and sent all types of internal and external material, from market analyses to annual budget projections. I've written memos, reports, property and product descriptions, and so many emails. So many emails.
Writing has always been my preferred and (I like to think) my best medium of communication. It's my firm belief that it is the best medium to convey information that you intend the receiving party to retain. It also provides both a paper trail and a reference.