I am European and the feeling "that's none of your business" is shared by many people. An anecdote: The 500 euro bank note was originally created because Germa

I am European and the feeling "that's none of your business" is shared by many people. An anecdote: The 500 euro bank note was originally created because Germans had the habit of paying in cash, even for large purchases like cars, and they had a DM1,000 bank note (which is about EUR500).