E.g. I have a configuration which allows me to use nano while editing pdf side-by-side, and be able to click on the pdf and land in the correct line in nano, and vice-versa. (and obviously compiling the latex document itself happens via a custom keystroke).
By comparison nano is everywhere and was super-simple to configure and spruce-up with custom functions, so it just stuck with me.
As for other competitors, when comparing to vim, I find it much simpler to use, and to the surprise of most vim users I speak to, equally powerful (at least for my needs).
I think they recently added Ctrl+S to save by default, even if unconfigured, woohoo.
XOFF ignored, mumble mumble
They told me it had always been this way and I felt stupid for a bit. Good to know it's a recent addition.