I wouldn't consider pos a very good usecase for bitcoin in general.

Credit cards are specifically designed for a consumer environment, and even if bitcoin continues towards the moon, I don't predict physical paper currency is going anywhere anytime soon.

Being able to buy a burrito with internet money is pretty cool, but I think of bitcoin as more of a useful network of human trust/power, than a consumerism enabler.

PS: Get a Bitcoin https://blockchain.info/charts/market-price?daysAverageStrin...