I have been using KDE via Kubuntu for about 2 years now, other distros with Gnome before that. Based upon the name (KDE Advanced Text Editor, K.A.T.E.) I always thought of Kate as an alternative to Notepad++ or something like that. Like a highend note-taking app.
I recently started using Kate for managing my Docker-Compose yaml files on my homelab, using the Git functionality to sync to my repos and doing some web development. It's basically an alternative to VSCode or Codium.
Thanks to the devs who work on Kate . If you don't hear it enough we appreciate you!
It's my fave too. It handles opening files over the network very well and I like the scrolling system on the right.
Featherpad is my alternative when I want something I can paste into on the screen right now as Kate loads a little slowly.
Fun fact I just learned recently: If you have text in your clipboard, you can paste that directly into the file manager (or the desktop background). It will prompt you for a filename, and then create a file with the pasted text in it.
If all you want to do is paste some text, you can actually do that without using any text editor at all.