Why is the earth-world considered more important than the world of Brahma or heaven, according to Sai's teachings in the Satcharitra?

Chapter 37 of the Shri Sai Satcharitra presents a profound perspective on the significance of our earthly existence. It argues that the earth-world is of greater importance than heaven because heavenly realms are primarily for exhausting merit through sensual enjoyment, after which one inevitably falls. In contrast, the earth-world, despite its fleeting nature, offers a unique opportunity for spiritual liberation. The text emphasizes that even a momentary life on earth is invaluable if one offers every action to God. This dedication leads to attaining a 'place of fearlessness,' a state of liberation that is not possible in realms focused solely on pleasure without devotion to Hari and the Guru.