I believe there was a quote, from a founding father, regarding the use of curse words to prove a point. I dont remember it verbatim, but it was something along the lines of a person who resorts to cursing & name calling, has already lost the argument.
That being said, it DOES have a place. Getting someone to comply, move, or, as was previously stated, get them out of their fog of complacency, it certainly does work. High stress situations, sometimes there is a need to be loud. And, sometimes, loud involves swearing. I admit, I swear a LOT. But, when I am making a point, I REFUSE to either name-call, or swear, for the reason stated above. The best part of that is, that usually the person who I am having a discussion with, gets frustrated, and will resort to it first. Simply because they know me-and that I use colorful language. So, speaking intelligently with them, without resorting to that, throws their game off. A neat little trick I learned years ago