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Purpose of having good credit when you are well-off?
I have never had a credit card and have been able to function perfectly well without one for 30 years. I borrowed money twice, once for a school loan that was countersigned, and once for my mortgage. In both cases my application was accepted. You only need to have "good credit" if you want to borrow money. Credit scores are usually only relevant for people with irregular income or a past history of delinquency. Assuming the debtor has no history of delinquency, the only thing the bank really cares about is the income level of the applicant. In the old days it could be difficult to rent a car without a credit car and this was the only major problem for me before about 2010. Usually I would have to make a cash deposit of $400 or something like that before a rental agency would rent me a car. This is no longer a problem and I never get asked for a deposit anymore to rent cars. Other than car rentals, I never had a problem not having a credit card.