Obviously, the account that gets interest each month ends up with more pennies because the interest ends up earning interest. Banks that have common stock want to make a profit for their shareholders. In contrast, savings and loan institutions and credit unions want to keep their members happy and are willing to make modest profits. This statement, while very amusing, is really quite scary. Checks are only as strong as the money in the account to pay them.
Many people find the process of balancing their checkbook each month too much of a hassle.
So they periodically check the amount of money in their accounts and then write a check if they guess the balance can cover the check. The surprise comes when someone to whom you wrote a check holds it for many months and then cashes it. Banks make lots of profits off people who bounce checks. If you do not remember how to balance your checkbook, a simple review course follows. Compare the numbers on the checks you have written to the check numbers that have cleared on your statement.