Earlier quoted context omitted.
Second emacs org-mode. I use almost nothing out of it. I have the default spacemacs configuration. I literaly just write bullet lists and cycle TODO and DONE states on them. Still the best todo-manager :)
I've done a ton of writing and system description. I've got kit in Illustrator, I've bought tools on the mac like Scrivener[0] and Scrapple for writing fiction and technical documentation. I can really move with Omnigraffle. I've bridged that gap with writing my own tools in Python with JS web display layers. I am a competent developer in a few languages and I have known about emacs and org-mode for going on a decade…
Most of my day-to-day development happens in VS Code, most of my in-console or over-the-ssh editing in vim. For interactive/exploratory programming I often grab jupyter notebook.
But having emacs with an org-file open at all times is nice. The bullet lists are pretty :-) And I am slowly branching out to other things that org-mode is capable off. I.e. I started writing a presentation outline in org-mode, then I realized that I could just write the whole thing there and export it to reveal-js html with few key-strokes.