They use it because Emacs takes as much as eight megabytes of memory (and is constantly swapping!) and also because vi is optimised for 300 baud terminals. If I

They use it because Emacs takes as much as eight megabytes of memory (and is constantly swapping!) and also because vi is optimised for 300 baud terminals. If I ever have to use a computer with less than eight megabytes of memory via a 300 baud terminal, I will definitely switch to vi.