When you dream at night your dreams tend to take the form of your fears, obsessions, desires, hangups, big emotions etc. But you return. The physical world could be called a moderator. It keeps you from descending too far into your personal dreamworld.
But then you die. Same dreamworld, but no moderation. You troll yourself to exhaustion. Might take a million years. Then the physical world draws your attention again, or something.
In greek mythology there’s a forest in the afterlife. Each tree is a soul locked in a catatonic dream-passion. Each fugued out in his personal hallucination. The forest is vast.