Don't know why but that amount of transactions still seems very low compared to credit card transactions... there is still a lot of space to grow...
The problem is, transaction fees are already so high that it's hard to justify using Bitcoin to purchase a cup of coffee, and Bitcoin processes 1000 times less transactions than fiat payment systems. And Ethereum or any other altcoin are in the same situation, so actually there's not much place for growth and adoption untill cryptocurrency protocols get major updates that will significantly improve their efficiency.
Totally agree. Bitcoin is not currently working as intended, because it's too costly for small transactions. Who will use bitcoin to buy a coffee if they fee is the same price as the coffee?
The current usefulness of Bitcoin is limited to large international transactions where traditional banking fees are higher and the transaction speeds are still slower.