@nursefrombirth I think there is a belief that swearing = bad, therefor anyone that swears must not be a good person.
Swearing is just a part of communicating. And even those who don't "swear" still swear, just with less offensive words.
"Son of a biscuit" comes to mind... the intent is there, they just lack the fortitude to use the actual word. Or there are kids nearby.