Academy of Sciences of Heroesland

What will you do when you can get everything you want?

Everything? I'll get the most accurate, detailed, and complete information about the world? Well, yes, I plan to finish with this in the near future, in a couple of months, maybe. :D

And what is the degradation? Physical or mental?

Of course, mental, physical is not so unpleasant.

After all, human development only foreshadows the end of his life.

And what doesn't foreshadow it? Or was the idea that death automatically puts an end to development? If so, I think otherwise: after death, a person is freed from his material shell, including his brain, which becomes a revolution in his development. Because, when he used the resources of the brain, he could only know the material, but then... Endless possibilities that are not limited by the laws of physics :)
--------

But that's not the case. Either we believe that it is possible to fully understand the structure of the Universe (and thus prove/disprove the existence of God), or we are weak-willed agnostics and believe in the incomprehensibility of the world.

The world is incomprehensible because there is demonstrably more information in it than there are molecules, so even if the entire Universe becomes someone's brain, it still won't have enough memory to know everything.
-----
Another argument about the incomprehensibility of the world, very simple: the Heisenberg uncertainty principle :)