Why is our life on Earth considered so important in Sai's philosophy, especially when compared to heavenly realms?

Chapter 37 of the Shri Sai Satcharitra emphasizes that our life on Earth is of profound importance, even more so than heavenly realms. The text argues that one falls from heaven after their merit is exhausted, making it a temporary state. In contrast, the earth-world, despite life being fleeting, offers a unique opportunity. Even a momentary life is significant because he who offers every action performed in that moment to God can attain a state of fearlessness. Chapter 37 dismisses the value of any place, even the world of Brahma, that lacks devotees of God, the narration of stories of Hari and the Guru, and the worship of God. Therefore, earthly life is the prime ground for spiritual practice and achieving liberation.