I've always disliked not having a space between a -parameter and it's option. "-r un" is so much more readable and explicit than "-run". Why do people not inc

I've always disliked not having a space between a -parameter and it's option. "-r un" is so much more readable and explicit than "-run". Why do people not include that space? Certainly it's not to save the time of not hitting the spacebar, right?