Markdown is IMO good enough to archive. The major point of using markdown, or why I use it, is that it doesn't require a working implementation to be understoo

Markdown is IMO good enough to archive. The major point of using markdown, or why I use it, is that it doesn't require a working implementation to be understood. I can open a markdown file in ed and still understand it. From what I've seen of RestructuredText and Org-mode, if i'm not using the implementation, it becomes a mess. (I also always recommend to put anything that isn't widely implemented in Markdown in HTML instead since that will be reasonably parsable for the next couple decades.)