Even though digital assets will serve as a great alternative in the nearest future, we are going to still need banks to convert to fiat in order to cater for our needs. At the moment, digital assets are not an acceptable means of exchange universally.
It will serve as great alternative and hopefully will develop service structure around itself so it will actually be possible to live without banks, with companies like coinbase, binance and etc (working with visa, master card and other big corporations)