I've written a book in asciidoc using proprietary tooling. It was a fine experience.
However, the open source tooling doesn't support what I need for a physical book, so I chose to use pandoc and markdown instead mostly for to the market size of markdown.
(I previously wrote my own tool chain for rst to latex and epub, so I'm week seats of what features are needed to make digital and physical books. I was sick of using a format that had limited tooling while the world had moved on to markdown.)
However, the open source tooling doesn't support what I need for a physical book, so I chose to use pandoc and markdown instead mostly for to the market size of markdown.
(I previously wrote my own tool chain for rst to latex and epub, so I'm week seats of what features are needed to make digital and physical books. I was sick of using a format that had limited tooling while the world had moved on to markdown.)