This universe is fully described in the Fifth Canto of Śrīmad-Bhāgavatam. You will see it, where, which planet, where it is situated, what is the dimension, what kind of people live there. Everything is there. Similarly, there are description of the hellish planet, downwards. So that description of those planets, when Parīkṣit Mahārāja heard it that "These sinful men, they are suffering there; some of them being fried in boiling oil . . ." This description is there. Some of them put into the river which is full of germs and mosquitoes, and some of them are forced to embrace a iron, hot iron man, a hot iron woman. In this way there are many description. And Śukadeva Gosvāmī concluded, "Mahārāja, I have described a few of them. There are many thousands and thousand kinds of suffering." Parīkṣit Mahārāja is a Vaiṣṇava. Vaiṣṇava means devotee. So he did not appreciate the suffering of the human being in such a way. That is a Vaiṣṇava's nature. Vaiṣṇava himself is very happy because he is in direct connection with Kṛṣṇa. He personally has no complaint, because a Vaiṣṇava is satisfied simply by serving Kṛṣṇa. That's all. He doesn't want anything.
Caitanya Mahāprabhu, at least, teaches us. Caitanya Mahāprabhu says, na dhanaṁ na janaṁ na sundarīṁ kavitāṁ vā jagad-īśa kāmaye (CC Antya 20.29, Śikṣāṣṭaka 4). Dhanam means wealth, and janam means many followers or family members, big family, big factory. There are many businessmen, they are running on big factories, and thousands of men are working at his direction. This is also opulence. And to have great amount of money, that is also opulence. Dhanaṁ janam. And another a opulence, to have a very nice wife, beautiful, obedient, very pleasing. So these are material necessities. People generally aspire for these three things: wealth, many followers, and a good wife at home. But Caitanya Mahāprabhu says, na dhanam: "I don't want money." Just the opposite.