Same. I have a couple of nice html templates (with locally-defined css and mathjax styling), and I now take all my notes directly in html in nano.

Once you've written a couple of documents, the usual tags become muscle memory and are no more of a bother to write than markdown. I've even created a couple of nano macros to automate some of the process.

"But it's not readable like markdown" you might say. Well. This might be true of 'some' html, especially autogenerated stuff, but the stuff I write is totally readable. Once you settle on some meaningful indentation and tag presentation conventions, readability is not a problem. We're talking about plain html documents, after all, not complex websites. The subset of html tags you'll need is generally very small and largely unintrusive.

I could even go a step further and say, my HTML is as readable as this guy's rST, but this guy's generated HTML code is far worse than how my direct HTML would have looked.