It's the equivalent of yelling "DONE" to each line. I mean really, the satisfaction of hitting that carriage return is like crossing a finish line over and over....it doesn't get old? I think we need to go back to having a margin bell to ring at the edge of 80 columns :) (see:
https://en.wikipedia.org/wiki/Punched_card why this is so) so we know exactly when to hit the return.
