I personally use both, I'm saving bitcoin to sell at highest price, and I'm saving fiat currency into the bank to buy bitcoin at a lower price.
That's why I believe that both have important roles in different situations.
of course, I agree with you. both have advantages and disadvantages of each. by keeping both of us can have a better future as well.
because both are also needed, required under the conditions that we experience.
banks usually have only disadvantages and nothing else to be honest, if i get a chance i just use bitcoins in order to avoid the banks