Why is it more important for our community to focus on spiritual activities on Earth rather than aspiring for heavenly rewards after death?

Chapter 37 of the Shri Sai Satcharitra explains that heavenly abodes are merely for sensual enjoyment, and one inevitably falls from them after their merit is exhausted. In contrast, the earth-world, though life is fleeting, holds profound importance. The text states that 'he who offers every action performed in a moment to God attains the place of fearlessness.' Therefore, a community's focus should be on earthly devotional practices like chanting God's name and narrating the Guru's stories, as these are the true means to liberation, unlike the temporary and ultimately unsatisfying pleasures of heaven.