I wish I knew! My money is still mostly in index funds and real estate.
My sneaking doubt is whether the index can keep growing, because doesn’t that depend on infinite growth based ultimately on mostly finite natural resources, manpower, and land? But maybe we can always extract and produce more with new technology, and that manpower may get leveraged or extended by AI and robotics. Or maybe just financial magic beyond my understanding.
Regardless I have been thinking a lot about what aging and declining populations might do to the economy in the medium-long term. I only know that I know nothing.