Convenience — It is fast and easy, and you can access your funds 24/7.
Security and Protection — Credit card companies monitor your accounts, including your debit accounts, to detect and resolve fraud. Most debit cards also come with zero liability protection, meaning that you are not responsible for unauthorized purchases. In most cases, funds taken from your account due to fraudulent use will be returned to you. Cash does not offer security protections; and once you lose it, it's gone.
Easier Record Keeping — Debit card transactions are automatically deducted from your checking account, so you can access your up-to-date balance on your card issuer's website or over the phone. Your monthly checking account statement usually will provide full details of the debits on your account, including merchant name, location, amount, and date of purchase.