I think it's safer to keep the money in the bank but it's more profitable to invested in the crypto currency market !
I agree to you because there are some hacker on online but in bank was not so the more risky, the more money you've got. At the bank, you can gain a little profit but sure money while at crypto, it is either you get double, trice by your money to get you back but it is also you can gain loss a double or thrice also.