I thought that was a bit odd. If it was for the author's own rationalization and is not trying to convince the audience of a any kind of point, then why is the

I thought that was a bit odd. If it was for the author's own rationalization and is not trying to convince the audience of a any kind of point, then why is the author publishing this publically? Why can't the author write this out in notepad or on pen and paper(Like I do.) and leave it at that? Vanity?