My PhD has made it eminently clear to my peers that I was never taught, ever how to write. What I have instead is a rhetorical toolset which is mostly derived from a childhood being raised hearing sermons three times a week, often from my father, and the way he made points. The way I structure sentences and paragraphs owes more to how they are spoken than how they should be written, which is why you may notice in my work some truly absurd clangers that drag on and on and then seem to be building to a point and don't. This is a deliberate trick, a kind of structural misanthropy that's explicitly meant to make you pay attention to it.
And it's valid.
I write thousands of words a day, I write a daily blog on a variety of subjects from the instructive to the ridiculous, and in each case, I'm presenting it with this specific set of writing tools that I got not from any kind of proper, formal education but rather from storytelling aloud, talking to people, and in particular, a lot of writing on IRC.