So this is a chance, these conditioned souls who have come to this material world to enjoy senses, they are given chance, they are given chance, "All right, you enjoy. You want to enjoy as human being. All right, take a body of human being. If you want to enjoy like a tiger, all right, take a body. If you want to enjoy as demigod, all right, take a body." Kṛṣṇa is so liberal, "Take, and enjoy as you like. But you'll never be happy." That is the crucial point. "If you want to be happy, then surrender unto Me." This is the point. You cannot manufacture your happiness. That is not possible. Therefore this is, this creation is there.
Try to understand. Why there is creation? This creation is a chance given to the conditioned soul, how to come to his senses, that living entity, that he is eternally servant of Kṛṣṇa, part and parcel. His only business is to satisfy Kṛṣṇa. So here is a chance. If we don't take this chance, then again the creation will be wound up, it will be destroyed. Again there will be creation, again another chance will be given. This is going on. Bhūtvā bhūtvā pralīyate [Bg. 8.19]. In the Bhagavad-gītā it is said, bhūtvā bhūtvā pralīyate. It is manifested sometimes and maintained for some time and again destroyed.
Prabhupada's lecture - Śrīmad-Bhāgavatam 1.2.23 - Los Angeles, August 26, 1972