I would agree that cursing is a lost art. It definitely has a place.
My kids occasionally try out a new curse at home to gauge reaction and effect. It is usually quite humorous to hear and it is remarkable how appropriately they use them. I don't forbid them from cursing but explain that it is strong language and must be used correctly. When used properly they can be an effective multiplier of intensity. Used incorrectly and communication is diminished. When used in the presence of their grandmother it can lead to a smack upside the head.
I guess all of these points have been made. Anecdotally, if you are expressing your displeasure with an officer of the law or any other official, cursing will immediately get you classified as radical, belligerent, hysterical and irrational. You can call a policeman a simpleminded mouth breathing functionary but you can't call him a fucking pinhead.
I don't see any problem with cursing here. Censorship is, by far, the greater evil.