Saving money in a savings account is like putting money in a pocket with holes. Banks only give you interests that are lower than the inflation rate. Its how they make money. You are better off investing in ventures (Crypto currency) that give a return higher than the inflation rate.
You can earn a lot of money from the bank through savings but only if you start from a lot of money in the first place. Whereas in crypto you don't need to have that big of an investment, however, it's volatile market and there is more risk involved but that's not important. most important point of crypto is no middle man and you have complete control over your assets.