Do you guys write for yourselves, or write to present ideas to others?

I mostly write for myself— that's where ideas get figured out. Most of this happens in an Apple Note or in Notion.

I'm apprehensive about all the time I'd be spending polishing something up to put on a blog somewhere, mostly because of the time it takes to explain stuff. We all know that if you take shortcuts and don't speak to a predefined audience, at some point it'll get picked up on HN and torn to shreds...