Now, I might be wrong or this might only happen in movies (?!), but why do Americans never say 'good bye' when hanging up the phone? - Hi john. - Hi mark. - bla bla bla. - bla bla bla. - So, I gotta go. - Yeah me too. *click* I mean, this can come off as kind of rude, don't you think? But on the other hand, if no one does it, why bother, right? So, why is this?