Why is it so popular? Do you like to use it? Does put into words how you feel better than other words?
Answer:Two of the most popular are:
1) It is an acronym for something (usually either "Fornication Under Consent of King" or "For Unlawful Carnal Knowledge"). This is almost certainly false. The trend of creating acronym words like scuba is very much modern. There is evidence of forms of the word "****" being used as far back as the early middle ages.
2) A story centering around Enlish longbow archers in the battle of Agincourt who (in defiance of the possibility of having their middle fingers cut off) waved the offending digits at the French, screaming that they could still "pluck yew!" … har har har.
The truth is, however, neither that simple nor that comical. The orgins of the word" ****" are unclear, although most agree that it probably has its roots in the Germanic or Scandanavian family of languages. One of my favorite sources, alt.english.usage, has this to say:
"[****] is a very old word, recorded in English since the 15th century (few acronyms predate the 20th century), with cognates in other Germanic languages. The Random House Historical Dictionary of American Slang (Random House, 1994, ISBN 0-394-54427-7) cites Middle Dutch fokken = "to thrust, copulate with"; Norwegian dialect fukka = "to copulate"; and Swedish dialect focka = "to strike, push, copulate" and fock = "penis". Although German ficken may enter the picture somehow, it is problematic in having e-grade, or umlaut, where all the others have o-grade or zero-grade of the vowel. "
As for myself, I do use the word, but I have to be pretty riled up to do so. I use it far less now than I did when I was younger. I remember when I first started using it semi-regularly in high school I used to get a little thrill or frission of fear when I used the word because it seemed so taboo to me. It seems more popular these days, although maybe that is just the circles I move in. 
I think "****"’s main value as a word is still in its shock value and as part of the youth culture. Want to really **** your parents off? Scream "F— you!" at them. There is also something to be said for the word’s linguistic versatility. It can be a noun, verb, adjective, pretty much a whole sentence ("**** the ******* fuckers!") It’s not necessarily very eloquent, but if used sparingly it can really get the job done and make a very strong point.
Answer:i don't know how it came into play but it does help me explain how i feel better, it shows the person that im talking to that i mean what im saying, but that's usually if im mad. it depends on how you use it though like if you say it all the time then it wont make that big of an impact on someone if they know you that yo mean what you are saying.
Answer:I like to use it. Try Wikipedia.
It has quite a muddle etymology and it seems has ALWAYS been vulgar.
If more people used it more often, it'd be considered much less vulgar, IMO.
Answer:I believe in the 15th century England had the plague aka the black death. Annihilated lots of the population a law was set up fornicate under consent of the king.Hence the word Don't know how true it is but I have googled it and it seems to have some substance.
Answer:The F word is old German and means to thrust. It was easy for it to get the sexual association because that is what is done in the sex act. It became more associated with sex when the church had a law prohibiting sex outside of marriage called For Unlawful cornal Knowledge F.U.C.K. Some entymologists dispute this others accept it. It has always been a curse word of the crude uneducated lower class for centuries and became more widely used by after WWII by the returing soliders. The sixities invented many more creative uses for the word. Shock commedians of the sixities used in their act which brought great laughs and finally movies and cable now use it freely and so dooes the general public.
Answer:We did some historical research on different swear words and the one you are referring to comes from a legal term to describe the rape of a person. it is; Forced Unlawful Carnal Knowledge.
So to use the word as a adjective is completely correct.
I think it so popular just because the use of it gets such an extreme reaction. I don't like to use it and hopefully never will. I can understand getting frustrated and using **** or Bugga(Australianism), but to use this one as well as D.H. is very crude, especially coming from the mouth of a female, and using it in the presence of children. I think it belittles the person that uses it and just shows their extreme lack of control or capabilities in using the english language.
Answer:You have to check this link.
http://www.maniacworld.com/f-81.htm
Anyway on a serious note I remember reading this on wiki a few years back. It was somewhat helpful so here it is:
**** is an English word that, as a verb, literally means "to have sexual intercourse with." Its use is generally considered censurable and offensive in most formal circles, but may also be rather common or expected in certain situations or social groups.
It is unclear whether the word has always been considered vulgar, and if not, when it first came to be used to describe (often in an extremely angry, hostile or belligerent manner) negative or unpleasant circumstances or people in an intentionally offensive way, such as in the term "motherfucker", one of its more common usages in some western parts of the English-speaking world.
**** is used not only as a verb (transitive and intransitive), but also as a noun, interjection, and, occasionally, as an expletive infix. The etymology of the word is uncertain (see below).
http://en.wikipedia.org/wiki/****
