If people become irreligious, then the whole world becomes a hell.
All the fights in Mahābhārata or in Rāmāyaṇa, it was meant for chastising the godless, godless. Just like Rāmacandra. Rāmacandra, Lord Rāmacandra, chastised Rāvaṇa. So he went to Laṅkā—they call Ceylon—and crossed the sea by making bridge. But what was the idea? The idea was that "This rascal demon is a godless person; so therefore he must be punished." He was punished not alone. Anyone who joined with him, everyone was punished. But Lord Rāmacandra did not occupy the land for His kingdom. He installed his brother Vibhīṣaṇa, who was a devotee in the place of Rāvaṇa. Just like Kṛṣṇa. Kṛṣṇa was taking part in the Battlefield of Kurukṣetra and inducing Arjuna that "You fight." Arjuna was not willing to fight, but He was inducing to fight.
So what is the purpose? Because the other party represented thieves, rogues, and demons. So Kṛṣṇa wants therefore that somebody must be king who is His representative, devotee. That is the whole plan.
This is the purpose, dharma-saṁsthāpanārthāya, to establish religious principles. If people become irreligious, then the whole world becomes a hell. Just like at the present moment, anywhere you go, it is hellish condition. Nobody is peaceful, nobody is happy, although materially very much advanced. Political entanglement, social entanglement, religious entanglement, economic entanglement. Simply entanglement. No peaceful living, anywhere. Just like at the present moment, the whole world there is... What is that crisis? Power crisis? Energy crisis. So crisis must be there. Otherwise, if you live peacefully, even within so many crisis, war, and fighting, we are thinking this world is very nice. In spite of all these difficulties. Especially in the Western countries, every ten years there is a war. First World War, Second World War. Before that, Hundred Years War, Seven Years War, Trafalgar's war, Waterloo war. War, war, war. There cannot be any peaceful life, because everyone is rogue and rascal, so there must be war. There must be punishment by nature.