Earlier quoted context omitted.
>...all your deposits and interests disappear with it The US, EU and many other countries have deopsit insurance* schemes that limit risk to depositors. You may not get all your money back if you have large deposits, but for example in the EU you're generaly guaranteed to get at least the first 50,000 Euros. * http://en.wikipedia.org/wiki/Deposit_insurance
This isn't better. It encourages savers to be reckless in their choice of bank, and thus banks to be reckless in their lending policies, because the profits of risky loans are privatised while the losses are socialised. The ultimate loser is everybody, because the cycle of bank bailouts can only be sustained by printing money, devaluing everyone's savings and damaging the economy by degrading economic signals. You mi…
There is no way not to be the potential victim of this, because bank customers do not have enough information to determine whether a bank is sound or not. Worse, soundness is dependent on what everyone else is doing; a bank can be fine one day then destroyed due to a bank run. Risk is hard to deaggregate in the mortgage business because house prices all move together.
You're onto something with "profits of risky loans are privatised while the losses are socialised", but bitcoin really isn't a good solution to that.
any benefit is on average far, far outweighed by the costs
A cost-benefit analysis with no numbers! Convincing!