Bitcoin does not only reduce the banks workload, it has also render is less demanding for people to have it as the onky means to make transactions or payments, which on other words we can say that bitcoin has come to offer what other banks or institutions can't offer to individuals to remain decentralized from central authorities, vut to ask further, have you not been sleeping before, because it does not end in choosing bitcoin over fiat, you need to learn how you can privately mintaian your privacy and financial asset in using bitcoin  and this start from the wallet type you use.