I just think it's very lazy speech, when there are so many good expressive alternative words about that are perhaps not classed as offensive or foul-mouthed. That's not so say that I never swear, or that the occasional use is never justified, but "bad language" has become over-used.
As for using it in folk clubs:no good reason for it: a witty put-down of an over-vociferous heckler is far more effective at silencing him/her (oh yes, there are "hers" too!) Long live the art of repartee!