Do you feel it's inappropriate for people to curse loudly in public?

I spent my day holiday shopping today, and I was in a department store paying for my stuff when I overheard someone say something with the word “fuck” in the conversation. It was pretty loud and I saw they were teenagers.

I use the word “fuck” all the time, but not loudly while in a public place. If in public, I would probably not use it unless there wasn’t anybody around. If I were to use it amongst people, they would have to be close friends that I knew were ok with that language. I feel that cursing in public runs the risk of little kids hearing it, which may bother the parents, or runs the risk of offending people that are religious or don’t like cursing for whatever reason.

Do you feel it’s inappropriate for people to curse loudly in public?