A Shame Culture would not allow the blasphemy, the vulgarity of everyday speech. To openly and publicly use swear words only advertises how low we have sunk.
Some people dismiss objections to profanity as being overwrought. After all, "its just words." Like you, however, I grow increasingly alarmed at the proliferation of debased and vulgar language in the public sphere.
When I was young I was an enlisted man in the Navy - where profane language was sometimes an art form. Yet, even there, we had boundaries. Language often used among enlisted men was not used in the presence of ladies or officers. There were also distinctions among ratings: you were more likely to hear an expletive from a Boatswain Mate than an Avionics Technician. In other words, vulgarity - even in that environment - was recognized as something that was classless and needed to be curbed. Yet, today I hear words from the mouths of otherwise attractive young women that sailors back then would never have uttered in public.