Your money in the bank is just a number that shows the amount of balance you have saved, it is your money, but it is not entirely yours because the bank has access to manage the money. If you keep it in a small amount to make it easier to make buying and selling transactions, you may still be able to bear the risk if something happens to your bank account, such as a break-in or your account is suddenly closed. Make your bank account a temporary transit place when you make a withdrawal from the Exchange, after that you manage the money yourself to avoid any risks that may occur.
Indeed, if we continue to save money in the bank, honestly it is difficult to develop it to be wider in the sense of the potential generated by each nominal amount, and to create a security that we will obtain, there is a need for more effective thinking for the scale of this money storage with things that can produce.