The use of credit cards for me is unwise. You are spending money that’s not even yours yet. How sure are you that you can pay for everything you are buying now? No matter how good your source of income is, nothing is permanent. Credit cards only force you to spend more than what you can. Agreed?
Are payday loans wise? Is gambling wise? Is drinking and smoking wise? Is doing drugs wise?

What about the "buy now, pay later" financial services(basically another form of debt)?. I can go on and on. Some things aren't wise, but many people still do them, and many banks and companies are taking advantage of those people. What do you suggest? Credit cards to be banned? If such thing happens, all the shady "loan sharks" will get plenty of new "customers" and the situation will get worse. Drowning in debt isn't wise, but the world is full of low IQ people, who make financial mistakes and pay the price later.