Why do people get upset over a word that has so many uses and meanings depending on the context it is used in.
F*ck can be used as a verb, noun adjective, adverb, pronoun, or interjection, amd as a result can be used as virtually any word in a sentence.
F*ck is also one of the very few words that can be applied to the middle of just about any other word (eg, absof*ckinglutely).
A few examples of how the word f*ck is used in everyday language are:
Greetings - "How the f*ck are you?"
Fraud - "I was f*cked by that car dealer."
Dismay - "Oh, f*ck it."
Aggression - "F*ck you!!!"
Disbelief - "What the f*ck?"
Incompetence - "He f*cks up everything he touches."
Lost - "Where the f*ck are we?"
Suspicion - "Who the f*ck are you?"
Refusal - "You can f*ck right off."
Impressed - "That was f*cking amazing."
Now when that particular word is used in the contexts shown above, how the f*ck can anybody get f*cked off about that?
PS
This video will probably give better examples (those that are easily offended obviously shouldn't follow the link)
http://www.youtube.com/watch?v=4rX7-R54-Q8