Trust me, I don't. I know some idiots, and you're probably not one of them.
What I dislike is casual swearing, dialogue laced with four letter words contrived to display the character's laissez-faire attitude towards the status quo, the villian's familiarity with gutter tongue, or the inherent toughness of your MC. Here's what you're really doing: Showing that you as a writer have to rely on an over-used group of four letter words to convey intensity.
How to be intense without swearing? I advise watching Breaking Bad in it's entirety, but for a quick example, this clip from Season 3 will do: