If you mean using emacs as your code editor then yes, that's the main purpose of emacs for most users. However there's other hidden eastereggs such as M-x pong, M-x tetris or why not try M-x doctor if you're feeling a bit down.
Yeah. M-x doctor is really helpful, especially when you are depressed. For example, if you say the doctor that "I'm going to suicide", it will guide you the right way.
