Originally Posted By: zmjezhd
... but I have observed that all that whitespace gets used by writers, directors, actors, et al.

Is white space more important or the unrestricted back and forth of the dialogue?
Isn't it better to read:
"I don't care."
"F*** you!"
Instead of reading this :
"I don't care."
Mark
"F*** you!
Doesn't it dilute the tension?
[Just askin]