While banks have many negatives it is incorrect to say that they do not bring some positives. By acting as an intermediary they facilitate numerous transactions that otherwise wouldn't happen and this stimulates the economy. The most obvious one is how they use savings to facilitate loans.
IMHO, banks really gives big interest specially loans but what if banks were gone, many employees will lose their jobs. Unless people would immediately shift to earn and learned faster knowing crypto currency. Its still better to educate everybody and start including this one into general info so that everybody could be aware of.