Non-cash transaction are currently very popular with the public just because it make it easier for them. People no longer need to carry a lot of money in their pocket just to shop at supermarket or the like because they only need to use an ATM. It has become a modern payment system.
But when it come to bitcoin, I think it will still be difficult to implement in countries where the status of using bitcoin as a legal means of payment has not been legalized. Although bitcoin is much better than digital currency, its illegal status as a currency in some countries will hinder its adoption.