Starbuckone - I have similar attitudes to swearing in the home.
My children didn't swear at home because my wife and i don't, and we have always educated them to respect themselves and us, so it's never been an issue.
As grown women, they obviously know all the words I know, but again, it's simply not the way we talk to each other, so it's still not an issue.
That said, the first time i heard my eldest daughter swear, it was as a result of extreme provocation by my mother-in-law. We were on a family holiday in Florida, and my M-I-L disapproved of the two of us staying up to watch a video, and created enough disturbance to ruin the start of the film for us, before stomping off to bed, but not withoiut stwitching on the dishwasher, which, in an openplan living space, almost drowned out the sound of the TV.
As soon as M-I-L's bedroom door closed 'firmly', my daughter exploded with the confirmatin that "She's doing my f*cking head in!".
I laughed for about five minutes, partly because she was quite right, but also at the look on her face, and the force with which her opinion was expressed, together with the fact that I had never heard her use that word before - and my daughter was 28 years old at the time!
It's a story that still gets a laugh eight years later!