Why does the text consider life on earth to be more valuable than a long life in the world of Brahma or heaven?

The text posits that the earth-world holds a unique and profound importance that surpasses even the heavenly realms. As explained in Chapter 37, a key drawback of heaven is its impermanence; one is destined to fall from it once their accumulated merit is exhausted. In contrast, the earth-world, despite life being fleeting, offers a supreme opportunity. The scripture highlights that a person who offers every action performed on earth, even those done in a single moment, directly to God can attain the ultimate place of fearlessness. This potential for immediate and permanent spiritual liberation makes life on earth invaluable.