I'm disappointed no one's mentioned digraphs yet. I've used emacs for years, but I'm starting to use vim now because ctrl-k G* etc is just so easy (I type a lot of math).
If that's your only reason, stick with emacs but use evil-mode. I flip-flop between liking evil-mode (when I'm mostly just editing stuff) and preferring standard emacs keybindings (when I'm switching a lot between shells, dired, interactive sessions, etc.)
