According to the cyber media Tokenist, based on the results of their survey not long ago. The survey involved 4,852 respondents from 17 countries. According to the survey the number of people who trust Bitcoin more than large banks, increased by 29 percent in the last three years. The survey also showed differences in the generation's views about Bitcoin and traditional banks. 51 percent of millennials trust Bitcoin more than traditional banks.
The word here is "Trust", of course many will because as we have said, if you own bitcoin, you have total control of it. As compare to traditional banks wherein there are cases that you need to wait for 3 business days to be able to clear your money.
But we can't argue that banking system is still needed, even millennials, specially flashing those credit cards, Lol. And then again, this is just a 'survey', margin of error is still present and not to be taken seriously.