Srila Siddhaswarupananda Paramahamsa

Similarly, the fact that God has allowed the existence of suffering in the material world is due solely and wholly to His unconditional mercy and not a lack of it. If He were to have arranged this world so that there were only material pleasure and no material distress, the fallen souls would have no desire to transcend their condition or improve their lot, and thus would not have the opportunity to again be united in a mood of love with the Supreme Being. They would thus live in a world of shallow happiness-a world removed from God or any chance of knowing Him. Such a world of “pleasure” would not be pleasurable at all, but quite hellish. Hell is that place where the soul is the farthest away from God.
Science of Identity Foundation – Tusta Krishna Das

The Bhagavata itself tells us what it is:

“It is the fruit of the tree of thought (Vedas) mixed with the nectar of the speech of Sukadeva. It is the temple of spiritual love! O! Men of Piety! Drink deep this nectar of Bhagavata repeatedly till you are taken from this mortal frame.” The Garuda-purana says, again:

“The Bhagavata is composed of 18,000 slokas. It contains the best parts of the Vedas and the Vedanta. Whoever has tasted its sweet nectar, will never like to read any other religious book.”
Every thoughtful reader will certainly repeat this eulogy. The Bhagavata is preeminently the Book in India. Once enter into it, and you are transplanted, as it were, into the spiritual world where gross matter has no existence. The true follower of the Bhagavata is a spiritual man who has already cut his temporary connection with phenomenal nature, and has made himself the inhabitant of that region where God eternally exists and loves. This mighty work is founded upon inspiration and its superstructure is upon reflection. To the common reader it has no charms and is full of difficulty. We are, therefore, obliged to study it deeply through the assistance of such great commentators as Sridhara Svami and the divine Caitanya and His contemporary followers.
Now the great preacher of Nadia, who has been deified by His talented followers, tells us that the Bhagavata is founded upon the four slokas which Vyasa received from Narada, the most learned of the created beings. He tells us further that Brahma pierced through the whole universe of matter for years and years in quest of the final cause of the world but when he failed to find it abroad, he looked into the construction of his own spiritual nature, and there he heard the Universal Spirit speaking unto him, the following words: