I did not learn writing formally, and I do not publish what I write. But I do write a lot, mostly fiction to express the things that happen to myself in a controlled environment.

I tried not writing in chapters, but I find that the chapters helped me compartmentalize different times and places and specific subjects. It may be that I'm simply used to chapters from reading other books, but no matter what the book I find that some sort of compartmentalization is beneficial and often necessary.

If you eschew chapters, it can have a pretty distinctive effect on your prose. Prominent examples that come to mind are Finnegan’s Wake, The Waves, and On The Road, and all make for an intense read. The absence of pause gives you no place to put it down, you are ensnared within the inescapable flow.

Seems to fit stream of consciousness stuff better.

Although this does remind me of sitting on a plane as a kid with finnegan’s wake, and an older American leans over and reassures me that I’ll be able to move on to “chapter books” soon. To this day I remain unsure if he was being ironic or if he thought I was reading “Spot The Dog”.

Most writers kinda skip chapters. Instead, on early drafts, they focus on scenes, which might be 1:1 with a chapter, but are often 2:1 or even 3:1 with a chapter. The relationship between paragraphs, scenes, and chapters, is one way of thinking about and manipulating pace in a story.