Cashless society, in my opinion, will still be an eventuality.

Because most people are conditioned to follow central authorities. It is a conditioning that is hundred of years old. When Facebook successfully implements its Libra coin, it will undoubted gain mainstream adoption faster than Bitcoin.

What I think is important is to continue to educate the public the differences between centralised and decentralised money. To undo the hundreds of years of conditioning is not so easy.