Academy of Sciences of Heroesland

The brain remains one of the least studied organs in the human body. Many processes, such as the development of mental illnesses, memory, and dreams, are still not fully understood. And given that many of its features are still shrouded in mystery, I have doubts about our ability to maintain its health for a long time.
Furthermore, what about overpopulation? If people stop reproducing, that would be unfortunate.
Yes, I'm not a biologist, so I'm looking at the situation based on my existing knowledge and common sense. And of course, everything written above is just my IMHO.