I use Emacs and have been since around 1986. If you’re big on extensibility, Emacs has the elisp programming language built in. Vim used to be more performant than Emacs, but with today’s processor speeds, it is hardly an issue. Emacs can emulate other editors, and as someone else mention Doom Emacs gives you the best of both worlds.
If you are on a Mac, all the text boxes already use Emacs keystrokes. Ctrl-a = Beginning of Line, ctrl-e = End of Line, ctrl-k = Kill to End of Line, ctrl-d = Delete Character, etc.
When I worked for Amazon, someone had created a command line tool to be used in builds, but repeatedly starting up JVMs is painfully slow. I rewrote the app in C++ and it could be invoked 81 times vs one invocation of Java version.
If I need speed, I’ll use C++. If I need developer productivity, I’ll use Ruby.