Emacs and org-mode is frequently mentioned on HN as being awesome, but I don't feel like I could ever switch; I've got enough issues with vim already.
For one, all the keyboard shortcuts and commands that you have to learn; I don't know if I have the capacity to learn all that anymore, not without deliberate practice, while in modern editors you can get by with keyboard + mouse and slowly learn some new shortcuts here and there.
Second, it feels like you have to spend a lot of time to set it all up.
Third, will it replace an IDE? Error checking / linting, autocomplete, fast navigation, auto-imports, loads of things like that that seem to just work out-of-the-box in e.g. idea.
For the keyboard shortcuts, there's ergo-emacs [1] a minor-mode that already rebinds most of the common shortcuts (open, copy/paste and so on).
Or, if you like vi(m), evil mode [2] should be good to go.