I have no use for credit cards.
Credit cards are nice because they provide give-backs. Many credit cards give you frequent flyer miles on the airline of your choice. Or discounts at Amazon, Walmart, Starbucks, or the store of your choice. Discover gives you cash back.
My credit card is an excellent way to accumulate flight miles. I’ve not paid for an airline ticket in five years. I took the family to Europe a few years ago with frequent flier miles.
I’m the kind of customer the issuer hates. I rack up to miles but pay off the balance every month so I don’t pay any interest.