Credit cards are very useful. It's troublesome that we should pay cash at all times. But credit cards are not cash, and so we can't have feeling of reality, that is, it's difficult that we grasp the sense of prices.
Of course we must pay money after using credit cards. Lavish spenders always waste money whether they have cash or credit cards. In a case of cash, They can't waste more money than they have money in their wallet, but credit cards are unlimited.
Lavish spenders have more chance of bankruptcy in credit cards. We can't stop the current of the time. We tend to be easy. For example cars are very convenient for us, but we have many chronic diseases without walking.
In fact it's our preparation for shopping by credit cards. Young people tend to have many credit cards, and so they have more chances of pitfalls.
“Didital”is the key word of the modern society, but human beings are not so mechanical, that is, we have mind.