Yeah, we all know what Webster says these words mean.
We also know that paradigms change.
While it's true that cunt it definitely vulgar, and often derogatory, there are circumstances where it's appropriate and can make a hot situation positively volcanic.
And fuck has so many definitions one person can't possibly name them all. It's a truly universal word.
Plus it's actually fun to say.
I recommend you get over yourself a little, you'll enjoy life a lot more.