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! 
I agree. If you are going to invest your money in the bank, the increase of your money will be slow and there's even a possibility that it will not grow that much after a long year of investing. You should instead invest on bitcoin amidst the risky there is whenever you are investing on it. You will have higher chance of getting rich with it compared to banks. Banks are just for keep your money safe!