People are becoming increasingly accustomed to using bank cards. Now, with the increasing penetration of mobile and P2P payment systems, the necessity to use cash is quickly becoming obsolete.
Which do you think is the relation between bitcoin and credit card? Don't you think the use of credit card works as the same way as bitcoin does?
Given the current situation, Bitcoin is arguably the most valuable currency on the market, but to say that Bitcoin credit cards are difficult is because many people still do not know Bitcoin. Improving on currency issues is difficult.