Child care workers are some of the lowest paid workers around. The quality of your average child care worker is very low. I would trust a good robot over a poorly trained 20yo any day

Engineering will probably be one of the first professions to be mostly replaced by AI. There will still be a need for people who can come up with ideas for AI to design though, or to sort through the AI designs to find ones that can be marketed.

AI doctors will be much better than human ones. Its impossible for a human doctor to know about every possible illness. There will probably still be a need for a trained technician to do tests etc.

Where I live (Perth, Australia) we ran out of available fresh water 15 years ago. Now about half of our water comes from desalination powered by a wind farm.

https://www.watercorporation.com.au/Our-water/Desalination

At the moment there is very little chance (but not zero) of becoming an astronaut. Studying engineering (don't do a pure science) may give you a chance of becoming an astronaut.

However if SpaceX is successful in building a fully reusable spacecraft (starship) there may be many more opportunities in becoming an astronaut, as space flight may increase dramatically.

So study engineering and other things that may lead to becoming an astronaut, even if you don't you will have a good career to fall back on.

Good luck.

Memory transfer is a scifi technology. We have no idea how it could possibly be done. The workings of memory are almost completely a mystery.

More likely is finding a cure for aging using stem cell and other related technologies. We do have a fairly good idea of how aging happens. It is a combination of around 10 different processes that interact. There are possible cures for some of then be tested right now.

If you are predicting the future social structure based on the current US system you could get a nightmare scenario. However the US is a strange outlier in terms of socialist institutions. There are quite a few developed countries such a Norway that show what a good socialist/capitalist system can become.

Once production is completely automated, then modern monetary theory becomes more important. Many central banks use it now. I think that a combined socialist/capitalist system is likely. Capitalism is good at balancing the price and demand of goods and services without too much regulation. I guessing that maybe public companies will just be taxed more or be required to give a certain percentage of shares to the government, who will then just distribute the money that would have been paid to human workers. Company share holders will continue to earn about the same as now. Private companies cannot continue to operate if there is no one to buy their services