Offer your thoughts or opinion on the input financial query or topic using your financial background.

What reason would a person have to use checks in stores?
Rational reason. They like this method of paying. There is a delay between writing the check and having the money removed from the account. Their checkbook makes a carbon copy of the check, so they can update their balance easier. They can leave the store and update their checkbook register, or the spreadsheet or their Quicken or budget application data. They don't have to try and remember the amount, store name or date.