Vim. I used to use emacs in the mid-90s, but I just found that vi was more universally supported. At this point, I am too old and stubborn to learn anything else. I am really efficient in vim.
thats the exact same reason why i insist on doing things locally even if people nag me to use a webapp that does the same thing as the program. specifically, powerpoint/impress and canva (which is web-based). powerpoint if im on windows, impress if im on linux, and powerpoint has to be specifically the 2007 version.