It used to be one of those words I never used, but now I do. In writing or while in the midst of nookie, sometimes pussy just isn't enough, so cunt is better.
And in terms of using it in reference to a person, I would have to be really damn mad.
It's a word to be used when you need a little extra kick, so no, it does not really bother me.
Like most men I've been influenced by the women in my life. The C word was a no no to use as far as every woman I've ever had a relationship with. I thought that would give it extra potency in a fight. I rarely curse and one time when arguing I just blurted out , "You Cunt!" She stopped, stared at me and then burst out laughing. So much for trying to be the bad guy. No one takes me seriously.