In the Indian religions of liberation, the highest good is release. Moksha means release from samsara, the cycle of death and rebirth. The Muktika Upanishad distinguishes several grades of liberation and places one above the rest: videhamukti, disembodied liberation. Buddhism reaches a similar conclusion through different metaphysics. Nirvana is the extinguishing of the fires of lust, anger, and delusion, and with that the end of rebirth. Jainism arrives at the same destination by a different route, treating liberation as the purification of the soul from the karmic matter that binds it to bodily existence through many births. The traditions disagree about what the self is, whether it exists, and what binds it, but they agree that the highest good is liberation from the cycle of birth and rebirth.
Christianity and Islam replace the wheel with a line. Both prophesy a final judgment, after which life on earth as we know it does not continue. The dead are resurrected, the worthy enter paradise, and history is over.
Follow either vision to completion and the earth is emptied. The ultimate OKR is a planet indistinguishable from Mars.
The secular alternative starts from a different place. It does not ask how to escape the human condition or how to await its divine completion. It asks how to deepen human life here. The vision is something like Star Trek — a civilization that has solved the material problems, poverty and disease and war, so that human energy can turn elsewhere: to science, to exploration, to the questions that survival never left time for. The ideal is a civilization where every person has the resources, the education, and the freedom to spend their lives on the deepest questions.
Each person's purpose, on this view, is to move closer. Reduce avoidable suffering. Widen freedom. Hand off better tools, better institutions, and a deeper orientation toward truth-seeking than the one you inherited.