One of my most shameful moments in youth, at age 4, was when my sister and I were coloring at the table while the babysitter was over. We were laughing and sort of play fighting, and started calling each other 'whores'. Our babysitter ran in from the other room and scolded us vehemently. We had no idea how bad of a word it was, because our mother had been using that word to refer to us as recently as that morning.
Words are words are words, but nothing hurts more than finding out your mother screams at you with words that are apparently extremely offensive. So, I can say, until about age 4, curse words were just an everyday part of my existence. It wasn't until an outsider came along that I realized that there are some words that you
really shouldn't say. It's sad that my 11 year old babysitter had to teach me that.
Regardless, as much verbal abuse that was dished out by my mother, I turned out fairly well adjusted. My sister on the other hand, not so much. However, it seems like too obvious of a point to make that we all handle different levels of deemed "harmful" materials, and in different ways.
I worked with a girl who would confront people and tell them not to swear in front of her or her sisters (who also worked there, all adults.) Apparently it was offensive to her to even hear a single swear word in passing. The fact of the matter is we can't avoid
everything that offends us, but if we can walk away from it, or turn the station, there's little complaint to be had.
People in general are too naive and sheltered anyway.