>>And this is driving the problem. Exactly how many young healthy people so you think are going to sign up in order to pay for older sicker people?
You can say the same about any insurance: the people who never leave overheating pans on the stove to burn down their house, pay for those who do. If normal people stopped insuring their houses, the cost would skyrocket. Similarly, if young people are not willing to pat into the pot used mostly for others' care - then oldsters and sick people have a big problem coming their way.
IOW be careful what you wish for!
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1