of course if the money is a lot I would prefer to keep it in a bank or an ATM because of guaranteed security. I don't want a risk that I don't want because this is a matter of money. if we have lost money then we can be crazy and hopeless or resigned.
Investment is the best way to save and at the same time there is an opportunity to be profitable, yes its true that bank is safe to save for it is an centralized system but profit is always low and worst is if bank declare bankrupcy so still security is not 100%, therefore as for me I prefer to gamble to invest in crypto currency for I always believe its fate.