99% of all movie uses of the F word are gratuitous and add nothing to the movie. Likewise with 99% of the nude scenes and sex scenes.
Frankly Hollywood made much better movies when they had to answer to studio censors.
Solution for you. Just go rent movies from the 40s and 50s and don't watch any that offend you, okay? Or even better yet, start your own movie studio and make some nice G rated movies. I wish you luck. Really.
You can't put the toothpaste back in the tube. Films have progressed or perhaps regressed into what they are today. Film studios are in the business of making money. They do that by trying to make films that people will pay money to see. Sadly our culture has become quite profane, movies these days reflect that.
Free speech means FREE speech. I'm sure you agree with that. If you don't, then this discussion is over.