Balancing checking accounts is a chore. Some people do OK by balancing their account every time they write a check - right in front of the cashier. However, most people don't or won't.
You hardly need to balance your checkbook with a paper check register anymore. The more you bank online, the more they handle everything for you. They'll show any pending transactions, your account history, and your balance available for withdrawal. You can export everything to your favorite financial software program if you like.
Save the ink, paper, and brainpower cycles: let computers do the work for you.