... American entertainment is full of cursing and swearing. I cannot even have the radio tuning into English-language radio without hearing cursing at least once an hour.
This is, in many ways, akin to saying "I don't like to see drunk people. It's not fair that I can't go to a bar." You may or may not like it, but the current trend is that the majority of this country either speaks in, or is comfortable with, this language. There are services that are available to you if you find most profanity offensive, such as certain satellite radio stations and various cable television stations, that cater well to such sensibilities.
If you don't like it, change the channel. That's the great thing about the freedom we live in (when it comes to free speech, at least).
"Gotcha, you snot-necked weenies!" -- Post Bros. Comics