https://blockchain.info/charts/n-transactions?timespan=all (before someone says "it's speculators": no it's not—buying, holding, and selling BTC on an exchange does not create transactions on the blockchain; the vast majority of speculators leave their BTC in an exchange and never move it)
Always the same misconception being repeated... Your opinion is not supported by data. Usage is quickly growing:
https://blog.bitpay.com/bitpay-growth-2017/
https://blockchain.info/charts/n-transactions?timespan=all (before someone says "it's speculators": no it's not—buying, holding, and selling BTC on an exchange does not create transactions on the blockchain; the vast majority of speculators leave their BTC in an exchange and never move it)