Writers are not merely new scribes. Writers are people who use the written word for some specific purpose. Very coarsely, I claim that novelists are storytellers, poets are artists (who use words as the medium, like sculptors use marble or bronze), biographers are historians, textbook authors are teachers, journalists are investigators. For all these subtypes of "writer," the process of getting words on paper (or into a Word document, or an Emacs buffer!) is simply a means to an end. They certainly don't "only write" — at least not the ones who produce anything remotely worth reading.