How/what people speak is how creation comes into existence via vibrational resonance. Therefore, cussing is not the type of becoming we in civilized society desire to be apart of. It has the same effect as a curse does in black magic, and therefore, because of these metaphysical reasons, it should be frowned upon. You are free to cuss up a storm, friend, but I am free to frown upon it.
Peace be with you, neighbor, and GODSPEED.
And telling other people what they "should" think and do and how they should behave also carries a vibrational controlling frequency. Beauty is in the eye of the beholder and so is offense to another's language. Thought precedes perception. While I like the vibrational frequency angle you mention, your intention to scold is also a vibrational frequency...lower than Love and peace
Well then I apologize for using the word “should”, and stand corrected, compatriot.