Well until we have robots which can fully replace many/most jobs people do, the only way solve that is by increasing the proportion of working age people to those who are retired.

There are no other options. You can do that by either increasing immigration or birth rates. That’s it.

One other (bad) option is raising the retirement age or lowering the start-work age.

Maybe the solution is simply to end retirement. As in end the social security for old people.

It’s already set high enough that the years past that point aren’t productive. Social security and Medicare/Medicaid were a response to advanced age meaning destitution, poverty, and horrific suffering.

It’s essentially UBI and universal healthcare that winds up making a lot of demand for younger workers. Keeps the grandparents able to help raise kids, if wanted/suitable.

Maybe we could also recycle old people into fertilizer to decrease reliance on fossil fuels.

Once we have robots doing most jobs, heck why even have babies?

> until we have robots which can fully replace many/most jobs people do

Most people's jobs aren't necessary for a functioning society. If you look at say, agriculture, transportation, energy, sanitation, infrastructure, etc, what percent of the total population is employed in those fields, 5-10% maybe?

Society will be fine for a long time with drastically dwindling population, we'll just see a contraction of the "bullshit jobs" which have become the mainstay of post-industrial societies, with a higher percent of people employed in fields which are actually producing something of value for society.

What we need is a Agricultural Revolution in the Health sector. As it stands, it is way too people intensive.

By whom? Sustained how?

Well first, this is a problem that's gone regardless in fifty years. After the fat ripple has left our demography, there will be many vacant homes, lots of wide open highways, plenty of arable land, all to be attained for little by this shrinking population.

Second, this "crisis" is entirely brought upon themselves by the generation that will have want for people to "support them". Cut out elderly healthcare and the majority of your shortage is gone.

Third, there are plenty of people available for this support, as many of the jobs these youngsters do today are only done because they are very attractive in the current economic system. If the population as a whole agrees that this "crisis" is indeed a crisis, there is enough labor to step up.