- The 'F' Word -

Just by its sound, it can describe Pain, Pleasure, Love and Hate.
In Language, the word 'Fuck' falls into many grammatical categories.

It can be used as a Verb
Both transitive:- John Fucked Mary
And intransitive:- Mary Was Fucked By John
And as a Noun:- Mary Is A Fine Fuck
It can be used as an Adjective:- Mary Is Fucking Beautiful

As you can see there are not many words with the versatility of Fuck. Besides the sexual meaning, there are also the following uses.

FRAUD
-I got Fucked at the Used Car Lot
IGNORANCE
-Fucked if I Know
TROUBLE
-I Guess I am Fucked Now
AGGRESSION
-Fuck You
DISPLEASURE
-What The Fuck is Going on Here?
DIFFICULTY
-I Can't Understand This Fucking Job
INCOMPETENCE
-He Is a Fuckwit
SUSPICION
-What The Fuck Are You Doing?
ENJOYMENT
-I Had a Fucking Good Time
REQUEST
-Get The Fuck Out Of Here
HOSTILITY
-I Am Going To Knock Your Fucking Head Off
GREETING
-How The Fuck Are You
APATHY
-Who Gives A Fuck
INNOVATION
-Get A Bigger Fucking Hammer
SURPRISE
-Fuck You Scared The Shit Out Of Me
ANXIETY
-Today Is Really Fucked

So u see.. The heavy usage of me using the word 'Fuck' is not because I'm a vulgar person, but because of the versatility the word 'Fuck' encompasses. :)