Earlier quoted context omitted.
It sounds like they're not even aware that it was an option. Many people don't realize that emacs' default keybindings can be changed to be modal in exactly the same as vim, by using evil.
Sorry for the naive question, but if you're changing all your bindings to vim, then why use emacs at all? Is there any extra functional difference?
Regarding why edit files in Emacs instead of vim: I simply work on Emacs. I don't use a CLI or a file manager to navigate to my files, I already have projects set up in Emacs and can quickly open files in any such projects. Emacs also holds my note taking system. And when I'm dealing with git, nothing comes close to magit. Also, I've been using the Spacemacs framework for years, which makes it really easy to create such a customized and efficient configuration without much hassle.