You know how some people swear casually, while others would cringe in shame if the apocalypse happened and a curse word passed their mouth? Same for when they'

You know how some people swear casually, while others would cringe in shame if the apocalypse happened and a curse word passed their mouth? Same for when they're writing code. I don't quite get the shocked reactions.. I can understand thinking swearing is distasteful in certain contexts but would certainly never draw wider conclusions about a person because they swear. Then again, I'm Australian.