Credit card is created for convenience but due to some hacking reports it will cause panic to the people because they feel they are risking their reputation and credit line when hack. Well, in reality paper money is more demand than online transactions because those who transact online also uses paper money and as long as there are people in this world who are left behind, paper money will always remain.
Yes exactly it has started that the people are using digital money currently as well and also paying the expenses bill while not even getting in hand a single penny. The paper money on the other side is being used for so many years from centuries or may be more so it is not going to disappear that easy and that speedy.
Yes paper money is in work from centuries but still if bitcoin will establish then it will make the future of paper money as dull and people may shift to bitcoin just like the gold when people were using gold for purchases and when paper money came people started to use paper money and left gold for purchases now it seems something came to replaces paper money.