[ekianjo]

We already know that b) is not going to work in practice, because of the population curve. So, there's that. Why should you pay for something you will never get yourself?

[Vinnl]

Because of a), and because we don't have an alternative for b) yet, but whatever we might come up with might be bootstrapped with these payments.

[thriftwy]

How can we bootstrap anything with those payments, where they all go to the retired already? Can't spend same payments twice. And the balance isn't becoming better here.

[Vinnl]

They don't all go to the retired (at least, not where I'm from). A lot of it is reinvested in order to save for future retirements.

But yes, the bootstrapping is still an interesting problem.