From the Earth's perspective, everything does revolve around it.
Not when thought about, as Copernicus did. The heliocentric solar system model is a result of applying Occam's Razor to the epicycles required in the Ptolomeic Model to explain retrograde motion of the outer planets. So from Earth's perspective, everything does not revolve around it if the perspective is proper.
Of course you may mean that the universe revolves around humanity, or that the world revolves around some given individual. But that would be an egocentric universe.
So, why do you seek the living among the dead (dead planets)?
Maybe for two reasons. One is that we don't absolutely know they are dead, especially the moons Europa and Titan. The second is that some of those of a scientific bent are uncomfortable with an egocentric universe.