It’s very simple: errors in writing, of any kind, horrify me. If I wrote a book, and it were published, some would likely slip through, such as the one in the image above. If a book with my name on the cover had been published, and I then discovered an error, I would end up trying to get corrected copies to every buyer of the first edition, eating all profits, and then some. I also just don’t need that type of stress.
Please do not misunderstand: I love books.
Therefore, I do two other things, in lieu of actually writing a book (which has been suggested, to me, more than once). First, I read other peoples’ books. I seek higher-quality books to avoid those irritating typos, for they actually cause me pain when I see them. Even so, some slip through — ouch! — but at least the mistakes aren’t mine. I am almost immune to conventional causes of embarrassment, but this isn’t a conventional cause, and I certainly have no immunity to it.
The other thing I do is to blog, which is, of course, another form of writing. It’s a perfect forum for someone with this writing-quirk — because, when I discover a mistake in my writing, even months or years later, I can edit it away in seconds. This is why, for me, blogging > writing books. However, I am grateful that there are good writers for whom the inequality symbol points in the other direction.