[freedomben]

I agree with your main point, and mostly agree with you about practicality, but there are some options such as the trezor wallet.

[jnwatson]

Trezor is another dependency you have to trust.

I actually have the skills to evaluate such a device if I had a few weeks of spare time. Expecting the average joe to have that ability is folly.

We have a system of laws and contracts and enforcement that allows someone to trust their bank account without a great deal of sophistication.