Its interesting listening to people swearing and then when possible hearing the reasons that they do it. Swearing has a massive range of usage from those for whom its used like punctuation to every line of speech, the 'You Know' of the swearers. To those who genuinely shock when they swear. Kids use it as an impersonation of maturity, just like smoking. In this thread its been suggested that it shows passion which might be the case when its use is a thought projected response but for many its become a habit like sniffing and I don't mean glue.