I will blame the consumer culture of the US (and the banking industry and media that promotes it; I can't speak to other countries). They have made always having a balance on one's credit cards the norm. I'm teaching my kids that credit cards are short term loans with usurous interest rates, that you should never borrow more than you can pay back within the month, and that you should never carry a balance. I had to teach a friend in his 30s that you shouldn't carry a balance - he thought he needed one in order to maintain or improve his credit score. I'm sure he didn't make up that misinformation- someone in SM surely promoted that idea. ETA: Fixed a typo that changed the meaning of a sentence.