Why do Sai's teachings suggest that life on Earth is more valuable than residing in heaven?

The teachings in Chapter 37 argue that the earth-world is of profound importance and is superior to the heavenly world. The text critiques the desire for heaven, describing it as merely a place for sensual enjoyment from which one inevitably falls after their merit is exhausted. It even equates the pleasure of Indra in his celestial garden to that of a donkey in a dung-heap. In contrast, as Chapter 37 highlights, life on Earth, though fleeting, offers a unique opportunity. A person who offers every action to God, even for a moment, can attain the place of fearlessness. The presence of devotees and the stories of the Guru make the earth-world more valuable for spiritual progress than any temporary celestial abode.