This is my opinion.Banks won't make you rich.saving in bank can never do that,because of interest rate that bank gives you is too tiny.You saving will be simply be eaten up by the sleepy monster called inflation. As a example I will take ,When I'm in grade school,each day I received 10Rs (my country currency) from my mother.It was enough to by me 2 meals,but in now 10Rs enough to buy 2 candies. 
Banks are just for keep your money safe! 
You're right. But it's not the banks ' fault. The government decides on the issue. In government, have long been involved the whole clan. They hold on and fight among themselves for access to the Treasury. The mistakes they decide from the savings of ordinary people. That's the reason I never keep money in banks. Banks are just for keep your money safe!