In what ways are credit cards better than cash?

I believe that most Koreans prefer to use credit or debit card than cash wherever they pay for. It is really convenient and no need to think about changes. People just hold their smart phone these days because it is possible to pay with their devices, even it can be used for T-money so they just need to put their phones on the sensor plate. Samsung relesed a model which has payment function a few years ago and people are able to register their credit cards into the phone regardless of quantity and type of credit cards. It allows people to manage their spending by checking the amount monthly. It is really important for people to know how much they spend in a month because there is a minimum amount customer has to spend if they want to get a discount in various places or benifits from the card companies. In conclusion, I think people don\'t want to posess cash in their pocket because there is a risk of lossing their money. If it is possible to use cashes anywhere, I would use credit card