Odd Things: Why on earth do we let the Banks do it?

Right now the banks in the United Kingdom are in business and able to trade in markets by leveraging their depositors’ funds. Their depositors are only placing such funds on deposit because the government of the United Kingdom has given a guarantee supported by the taxpayers of the United Kingdom, many of whom have deposited the funds which are being guaranteed. Without the depositors funds the banks would not be able leverage and that would prevent them dealing in markets for profit (or loss).