Since I'm an adult, I' wont reply to this by saying: "emacs has more likely fucked you over."

OS X is on the other hand sexy, since you can build emacs-keybindings into the OS and every app that uses the Cocoa Text System, you can even get an "extra clipboard" with the kill-ring.

As for programming, when it is more convenient with an editor as the "control-center" for the endeavour, or real small things that makes a simple editor feasible, then I must say I prefer Vim.