There seem to be about a million markdown writing apps, but I don't really understand why they're useful. Granted, I'm someone who writes Java in Vim, but Markdown seems like the one language that's most suited to a simple text editor. It's is already so ergonomic and transparent that I can't really think of anything that would make it easier to write barring an AGI that could decide the words to put down for me. I don't often find myself needing to preview markdown while I'm writing it. I don't think I even really get much out of syntax highlighting. Are there actually a lot of people who get value out of this sort of app?