I'm not quite sure what your asking. Could you be more specific?
Today individual can pay bill from their accounts directly to the creditor or set up automatic withdrawals.
Which is better depends on you ability to manage your accounts.
We all know the unexpected happen and a person may have to withdraw money for their account to cover the expense. When this happens, an automatic withdrawal will process as normal, sometimes causing a overdraft or rejection of the transaction.
However, to pay your creditors using function such as Bill Pay, you may be able to delay your payment saving yourself additional fees or perhaps use another account to make your payment.
Therefore you have more control using a Bill Payment System.