Safety
Yes, this was the argument for cash, but credit cards have their own benefits when it comes to protecting your money.
The problem with physical money is if you lose it, it’s gone. That’s it. No more. Anyone who has ever had a wad of cash fall victim to theft or loss has felt the pain of knowing it’s gone forever. Credit cards, on the other hand, are just pieces of plastic. If you lose yours, you can cancel it and not lose a dime. Plus, if it does fall into the wrong hands, you’ll be liable for very little of the fraudulent charges, if any.