Yes bitcoin must come with slogan:
ONLY FOR PROS.NOT FOR INCOMPETENT OR NEW USERS.
The same applies for any financial system. Try doing a bank transfer without including the necessary fee and see what happens. In other words, you can't.
Ok I thought that bitcoin was supposed to be different from the banks.Something like pro-users. So how about:
BITCOIN: JUST LIKE BANKS , BUT MORE COMPLICATED.