regulation (in the UK at least) means that in many cases, if someone steals money from my bank account, I get it back. Compare that with what's happened to many cryptocurrency exchanges where they have losses (e.g. quadriga) and the consumers who used them are largely out of the money.

If the bank overcharges me, I have some form of redress (e.g. the PPI scandal).

It's not perfect by any means, but for many consumers it's likely better than a world where, once the money's gone, it's gone.