When human society becomes asat, or ungodly, or devoid of Kṛṣṇa consciousness, the entire world suffers. If human beings are well-behaved, animals will also receive sufficient food and be happy. The ungodly human being, ignorant of his duty to give protection and food to the animals, kills them to compensate for the insufficient production of grains. Thus no one is satisfied, and that is the cause for the present condition in today's world.
(Srimad Bhagavatam----4:18:9-10----purport).

Human civilization devoid of Kṛṣṇa consciousness is simply a civilization of lower animals. Sometimes such a civilization may study the dead body and consider the brain or the heart. However, no part of the body is important unless the spirit soul is present. In a modern civilization of cows and asses, scientists try to search out some value in the brain or heart of a dead man.
(Srimad Bhagavatam----4:28:24----purport).

It is significant in this verse that the government and the natural guardian, the father, should educate subordinates and raise them to Kṛṣṇa consciousness. Devoid of Kṛṣṇa consciousness, every living being suffers in this cycle of birth and death perpetually. To relieve them from this bondage and enable them to become blissful and happy, bhakti-yoga should be taught. A foolish civilization neglects to teach people how to rise to the platform of bhakti-yoga. Without Kṛṣṇa consciousness a person is no better than a hog or dog.
(Srimad Bhagavatam----5:5:1----purport).

If one engages himself in the service of the Lord through his life, wealth, words, intelligence and everything he possesses, he will always be liberated in any condition. Such a person is called a jīvan-mukta, one who is liberated during this lifetime. Devoid of Kṛṣṇa consciousness, those who engage in material activities simply become more entangled in material bondage. They have to suffer and enjoy the actions and reactions of all activity. This Kṛṣṇa consciousness movement is therefore the greatest boon to humanity because it keeps one always engaged in Kṛṣṇa's service. The devotees think of Kṛṣṇa, act for Kṛṣṇa, eat for Kṛṣṇa, sleep for Kṛṣṇa and work for Kṛṣṇa. Thus everything is engaged in the service of Kṛṣṇa. A total life in Kṛṣṇa consciousness saves one from material contamination.
(Srimad Bhagavatam----4:30:19----purport).

When Lord Caitanya asked Rāmānanda Rāya what is considered to be the most painful existence, Rāmānanda Rāya replied that separation from a pure devotee constitutes the most painful existence. In other words, when there is no devotee of the Lord present, there is great suffering in society, and association with other people becomes painful. In Śrīmad-Bhāgavatam (3.30.7) it is stated that if one who is bereft of the association of a pure devotee tries to become happy through society, friendship and love devoid of Kṛṣṇa consciousness, he is to be considered in the most distressed condition. In the Fifth Canto of Bṛhad-bhāgavatāmṛta (5.44) it is stated that the association of a pure devotee is more desirable than life itself and that in separation from him one cannot even pass a second happily.
(Teachings of Lord Caitanya).