That's just muttering to myself with extra steps. :D
There's value in muttering to yourself in a way that means you can revisit those mutterings one day!
Because that typically doesn't pay the bills unless you are both talented and fortunate enough to get noticed. Creativity takes time and effort and pouring it into a silent void void is demoralizing for most people.
If I'm writing for just myself, I could save myself the trouble & just not post.
If you were just writing for yourself, you wouldn't have commented here (and neither would I have).