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?
There are plenty of ICOs that are suggesting and introducing a Credit Card. But, overall, I think having such a card from Bitcoin itself would be the biggest thing it could happen and the market would simply spike like never before.
Too bad there hasn't been any thought on this from the devs.