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.
The big different between cryptocurrency and banking is the ability of money control where at the first one you have full control of ur money without third party in-between , in case you lost your wallet ID, password or private key no one inherent a thing .
Second is security and speed of transaction compared to regular banks .