I use Markdown and just start to peek into Asciidoc.
Do you know Powershell? It feels similar to me. You interact with objects instead of strings. That's also why string manipulation tools don't feel so great with org mode files. You cannot grab an org mode object as easily as a line or a paragraph with tools optimized for string manipulation.
For example, the ability to search a file or set of files and collect responsive org heading items in a separate "Agenda" buffer is hugely empowering for a lot of different uses. Org-mode on emacs has both very broad and very deep functionality.
It's not necessarily easy to learn, but you can ignore the more complicated stuff if you want, just use the very simple basics and remain ignorant of the much deeper functionality that's there for people who want to make use of it. Or, better, start simple and learn more complex bits and pieces as you go; there's an active and friendly org community that helps with that.
And, of course, like someone mentioned, being able to interact with your document almost like it's a proper data set that you can manipulate programatically.
But it is centrally dependent on emacs for that power. Markdown and asciidoc work in anything.
Otherwise I mostly program, admin or devops around. Bash, git, vim, grep, awk, tmux, ssh are the tools I use most. Nowadays also a quite a lot of Ansible. But don't like it as much.
You know, I spent nearly 10 years really learning all that stuff with the intention to use it the rest of my life. And to this point it seems to work out quite well. So no reason to learn other tools like Emacs, which would take up another few years to learn. Once you have a basic set of tools down it's more important to use it for value production.