Yeah. Unfortunately asciidoc isn't as popular as markdown and the ecosystem is small. I never paid much attention to asciidoc until I read this blog post - https://medium.com/@chacon/living-the-future-of-technical-wr... and realized that I have experienced many of the same frustrations with markdown. I tried out asciidoc and became a convert :)

For live preview of asciidoc there are some options - http://asciidoctor.org/docs/editing-asciidoc-with-live-previ.... Among them Atom with live preview works really well.