I grew up in a culture where it was "just the way people talked". There was no negative to it, it wasn't either good or bad manners, it was just, as George Carlin put it, use of the most flexible word in the English language.

Never even occured to me that people would find some of those words offensive until I moved out of that culture in my late 20s.

One thing to keep in mind in judging "bad words", is that most of the stigma attached to most "bad words" is that they were Saxon in nature, and the conquering Normans thought that using any Saxon words at all was proof of personal inferiority. In other words, the negative connotation to most English "swear words" is just pure racism of Normans vs Saxons. By considering the words "bad", you are simply being pro-racist.

That doesn't apply to blasphemous/sacreligious terms/phrases, nor to racist or other deliberately derogitory terms, of course. But it does apply to most "four-letter-words" and related Saxonisms.

Does that grant a license to use them where people will be shocked/offended/upset? Of course not. But it's better to be aware of why those words are "offensive" (racism) than to consider them in some way inherently "bad".