Presently, all worlds observable by intelligent life, even the most extreme or most barren ones, could maintain the presence of life with sufficiently advanced life support systems.
After all, the inability of life to survive was mainly due to the fact that they were simply too weak—they were unable to deal with extreme heat or coldness, and unable to live without air or water. Even elemental lifeforms which needed neither air nor water, nor feared extreme temperatures, would require magical energy, ether, elemental energy, or other essences.
Either way, the existence of life itself required various conditions that, if unmet, would have caused the existence to either die or enter a permanent state of hibernation.
As for superior lifeforms, one of their most fundamental abilities was the capacity to ignore all required conditions, to freely live as they wished upon any world they would care to choose.
