If I am forced to use an editor in the terminal, nano generally. But I very rarely need to because I have a functioning modern computer from within the last 25 years and therefore have a gui I can rely on. If I somehow manage to break the gui in a way that requires me to edit a text file (itself very very rare) I can fix it with nano.
Now, why would you voluntarily use an editor with a ui that's needlessly confusing and convoluted, an arse to learn, and notoriously difficult to even save a file and close without checking help files if you haven't already memorised completely random key combinations? I would say we'd love to know, but we already do. It's because you're an arrogant dickwad - at least that's what your last comment makes you look like
It's more powerful than nano, sure, but it's also needlessly more complex a ui. Your use case is legit and that you know vi is a reason to continue using it, but it absolutely should not ever be the default for anything any more!