Why shouldn't we swear or curse- LDS

So here are the reasons I've come up with why we are commanded not to curse or swear. 1. Some curse words have vulgar and awful meanings. 2. Culturally it is seen as unprofessional, unintelligent and impolite. On the issue that some curse words have vulgar and awful meanings. I fully understand why these shouldn't be used. But most swear words do not have awful meanings. As for it being a cultural issue, I agree, you do seem less professional and intelligent. But that all depends on who you are around and how serious of a word it is. For example, using the word Heck as an adult rather than Hell in some settings can be seen a childish, unprofessional and unintelligent. Also, most adults don't find it impolite to swear when something serious has just happened. Also, why is it not ok to say a swear word, but is ok to say a replacement word that means the same exact thing and is used in the same exact situations. Just like the word crap and the the "s" word. I've been researching what swear words actually are and why society even created them and I found that the reason society has swear words is a way to convey lots of emotion. For example, the seldom times I hear my dad swear, I know he means business and what he is swearing about is serious. Also, when I was younger and in school, whenever the class was rowdy and the teacher couldn't get our attention, they would swear and the whole class would immediately be quiet. I understand that overuse of a swear word is wrong because then it defeats the purpose of being used to convey emotions. But when the alternative to swearing is raising your voice, I see swearing as useful. I'm not referring to taking the Lords name in vain or to words that have dirty meanings. I'm talking about why is it bad to occasionally use a swear word that has a perfectly appropriate definition, and to use it at times when trying to convey emotion with a group of people where they don't perceive what you said as impolite. Society created the idea of certain words being curse words. Nothing is inherently wrong with the words themselves. So when your either by yourself or your around a group of people where it is socially acceptable to use a certain curse word in a certain situation, why should you still not use it?