Comment by Twisol
20 hours ago
I have heard this, and it is probably a flaw in my approach to purchases. But is that really justification to ask "who in the world uses debit cards"? I still feel more comfortable not being on the hook to somebody, and the organizations that extend lines of credit don't do so as a prosocial program, certainly. (Just because some people can safely make use of credit doesn't mean everyone can. I know someone who has unfortunately made poor use of their credit card, and I don't necessarily trust myself to avoid a similar fate.)
No, credit card companies aren't giving out rewards at a loss. Better cards have a higher interchange rate, ie the merchant pays more fees to accept a good card.
Hence why cash discounts are a thing (and yes they're legal again).