Why does the Satcharitra suggest that being born on earth is more valuable than attaining heaven? How does this relate to spiritual practice?

Chapter 37 of the Shri Sai Satcharitra posits that the earth-world is of profound importance, more so than heaven. This is because heaven is a temporary reward for merit, and one inevitably falls from it once that merit is exhausted. In contrast, the earth-world, though life may be fleeting, offers a unique opportunity for liberation. The text states that a person who offers every action to God, even for a moment, can attain a state of fearlessness. The earth is the arena for spiritual practice, where one can find devotees, listen to the stories of the Guru, and engage in worship—activities deemed essential and more valuable than the sensual pleasures of heaven.