Agreed. Writing lecture notes [1] in Asciidoc was a real pleasure. The clarity of specs and convenience beats Markdown in every way. It even beats TeX, I'd say, unless you want real control of the typography. A very nice default styling in Asciidoctor is a big plus for me too.

[1] for example, this: https://a-nikolaev.github.io/fp/lec/2/