Pursuant to Comic Book Post #5.
Max Landis, of Chronicle, American Ultra, and Red Letter Media fame, parodies the killing and unkilling of Superman in the famous 1993 DC cash-grab. It’s funny, and he makes a salient point at the end about ruining death in comic books (NSFW due to language).
Philosophically speaking, death and life are inextricably intertwined, as mutually exclusive states of being must be. Thus, if death is a state into which one can pass in and out of with a wave of the narrative hand, then the stakes of life are shrunk accordingly. The meaninglessness of Superman’s Death just made him the more boring.