You do know where that cash back is coming from, right? Everything you buy has credit card fees baked into the price. The business pays anywhere from 1-5% on every transaction to accept your payment, and a small percent of that is returned to you as “cash back” rewards. Its why I’ve switched back to using cash and any coins I get as change go into a jar. That earns much more than %10 “cash back”, and some shops even make the customers pay the CC fee here in aus so I get a small “discount” too.