Used without due context, it’s certainly vulgar at best, however…..
Used in suitable context, it can be a very effective word……
Mrs STR has no objection to the word in question being used in certain environments, *cough*!
Paddy Considine’s use of the C word in one of the early scenes of Dead Mans Shoes is exquisite to the extreme – powerful, effective and emotive.
In short, I think it’s a fantastic word, but has to be used in the right place, otherwise it just becomes another foul and derogatory swear word. If you need to put a point across and it’s justified though, no word is better.
You might all well know by now – not a lot offends me.