He subjected himself to an experience that he was free to escape at any moment, and which he knew he would transcend afterwards, returning to his position as the most powerful being in all of existence. Having somehow understood the human condition... he arranged for many of his 'children' to suffer eternally, with no possible way to end the torment. An outcome that is so common that he, himself, admitted that few would manage to avoid it.
It's almost as if he enjoys knowing that there are sentient beings out there who will spend eternity in the deepest depths of utter misery. And that he enjoys it so much that he made sure that a lot of them would end up this way.