I cannot speculate on the behaviour of Americans but as a Brit I can agree on your point that I am rather unfazed by swearing. In fact I worked in an environment in which my boss and MD both swore during general conversation and even more passionately during some interesting discussions. I was drawn to those people and that form of communication because it felt we were really free to say anything we wanted and that meant a lot less bullshit, we'd speak our minds and get straight to the point leading to more honest viewpoints coming across.
This has probably been posted before but Stephen Fry's opinion on swearing is pretty valid in my opinion.
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Swearing is a really important part of one's life. It would be impossible to imagine going through life without swearing and without enjoying swearing... There used to be mad, silly, prissy people who used to say swearing was a sign of a poor vocabulary -such utter nonsense. The people I know who swear the most tend to have the widest vocabularies and the kind of person who says swearing is a sign of a poor vocabulary usually have a pretty poor vocabulary themselves... The sort of twee person who thinks swearing is in any way a sign of a lack of education or a lack of verbal interest or -is just a fucking lunatic... I haven't met anybody who's truly shocked at swearing, really, they're only shocked on behalf of other people. Well, you know, that's preposterous... or they say 'it's not necessary'. As if that should stop one doing it! It's not necessary to have coloured socks, it's not necessary for this cushion to be here, but is anyone going to write in and say 'I was shocked to see that cushion there, it really wasn't necessary'? No, things not being necessary is what makes life interesting -the little extras in life.
Stephen Fry on the joys of swearing. Stephen Fry: Guilty, BBC4, September 8th 2007
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