Given the Principle of Parsimony, Plato's Theory of Forms at least seems like the most likely afterlife(minus reincarnation because morality is objective but relative because symmetry always stays the same while risks change). The perishable no longer perishes after having perished. In other words, the perishable becomes the imperishable. If time is an illusion then all that recognizes real reality are abstract ideas. So when living beings deceased they become abstract ideas.