In a few country, you can use bitcoin as currency not just transafer. Its true that many people still not able to use bitcoin in many country but i do believe that in near future, we will able to use bitcoin in many offline merchant and online merchant
Probably, it will all depend on the outcome of bitcoin market price for 2018 and for the coming modifications of the system. For now, bitcoin has faced that much challenge. If given some time for bitcoin to modify and made adjustments then probably it would be easier for bitcoin to be used in an offline store as a mode of payment.