Emacs to vim boggles my mind. I mean, I've been a vim die-hard for decades now, but I'm not sure there's a compelling reason to switch from emacs to vim or vice-versa. To my mind they are pretty much equivalent feature wise.
I was considering this actually, but opted for eventually learning evil-mode at some point instead. Vim has superior approach to keybindings, but Emacs has the power of Lisp. Evil-mode feels like best of both worlds to me.
When I switched from emacs to vim, I was looking for something that
1. starts up fast - I used emacsclient but that got to be sort of a headache, and still did not start up as instantly as Vim does
2. Better keybindings - I would have used evil-mode but I felt at the time that it would be better to use actual vim.
3. Runs in a terminal window - Absolute necessity, so my only real choices were emacs and vim. I liked the workflow I had with `emacs *.py` or whatever I was doing but I thought at the time that vim would better support it.
A friend actually pushed me into using vim, which is funny because he uses the arrow keys with it... I got used to vim way quicker than I expected to, mostly because it was the only editor I installed at all (I switched from emacs to vim at the same time I switched from mac to linux)
Of course i do not recommend you switch between them but those were my reasons at the time.
The Emacs key combinations overlap with the standard Windows shortcuts in ways that make it hard (for me) to switch back and forth between Emacs and Office. Vi key combinations seem to occupy a completely different part of my brain.
