Agreed. I've been using cash reward credit cards for 20+ years. Pay them off every month, no cost whatsoever.
Credit cards also have safety and security advantages over debit cards. For example, when someone steals your credit card information—as happened to me twice on two different cards last year (I never let a card out of my sight anymore)—chances are the card issuer will detect and prevent fraudulent charges from going through. (Given your $50 liability limit, it's in their best interest.) BUT, if someone steals your debit card info, you're probably on your own. Good luck with that.
If your debit card has the Visa logo on it, that is just not true.