If I'm being honest, I cannot deny the fact that, well, cursing is not a great habit. But I have no shame for it.
It serves a purpose. The words help me describe situations when there are no other words for them, as well aiding my sarcasm. But there is more to it.
Highly intelligent people curse at the right times and when they have reached their limit. It's all about timing. In fact, a study explained on sciencealert.com found that people who curse have an expanded vocabulary. It is also an emotional release for many.
I'm smart enough to not encourage it in my younger family members, or let it slip when I'm worked up around others. Yet, I won't necessarily stop them from using the language if they have learned it and are old enough to know when not to; I just will not be the one to teach them it. This is a part of self-control.
Though, it's safe to say I have no shame with it. If I cuss I'm either extremely happy, upset or am being sarcastic. (I.e. Well, sht...) I even use it to get through to thick headed individuals, especially when I know I'm not being listened to. A few well-placed words and I'm suddenly important. It works on occasion.
As casual as I can make it, cussing is addictive. But that does not undermine how smart I am, or my abilities. I just know a lot of different ways to make a point. And if I am pushed beyond my normal anger, well, let's hope that never happens. In a nice state I won't usually mean too much by it, but if things get that bad I know I'm capable of being a beast.
So, in the end, cussing is not a sign of a limited vocabulary. All it is, well, is a finely tuned aspect to language that is put down and unappreciated. And, honestly, why should it matter if someone does or not? It's all personal preference, with respect built in.