Those are harsh words to throw at a man, especially when he’s walking out of your bedroom. — The Big Sleep

Having the last word is usually satisfying, but the last words of one conflict usually lead to the next.   I’ve damaged several friendships by insisting on arguing until I wore down someone else.  The momentary feeling of victory was quickly overshadowed by realization that I had said and done things that hurt someone I cared about.  Always remember what is important.  I doubt that it will usually be winning an argument due to endurance and snark.