The Lord was acting freely, as He willed, yet by His practical example He taught not to lead a life which goes against the principles of detachment and knowledge. Attainment of knowledge and detachment, as very elaborately discussed in Sāṅkhya philosophy, is the real perfection of life. Knowledge means to know that the mission of the human form of life is to end all the miseries of material existence and that in spite of having to fulfill the bodily necessities in a regulated way, one must be detached from such animal life. Fulfilling the demands of the body is animal life, and fulfilling the mission of spirit soul is the human mission.
(Srimad Bhagavatam----3:3:19----purport).

The servants of the Lord are actually the servants of society. They have no interest in human society other than to enlighten it in transcendental knowledge; they are interested in imparting knowledge of the relationship of the living being with the Supreme Lord, the activities in that transcendental relationship, and the ultimate goal of human life. That is the real knowledge which can help society achieve the real aim of human welfare. Knowledge in the matter of the bodily necessitiesof eating, sleeping, mating and fearing, transformed into various branches of advancement of knowledge, is all temporary. A living being is not the material body but an eternal part and parcel of the Supreme Being, and thus revival of his self-knowledge is essential.
(Srimad Bhagavatam----3:4:25----purport).

The human form of life is supposed to be the highest, for it offers consciousness for getting out of the clutches of birth and death. The fortunate child in the womb of his mother realizes his superior position and is thereby distinguished from other bodies. Animals in bodies lower than that of the human being are conscious only as far as their bodily distress and happiness are concerned; they cannot think of more than their bodily necessities of life-eating, sleeping, mating and defending. But in the human form of life, by the grace of God, the consciousness is so developed that a man can evaluate his exceptional position and thus realize the self and the Supreme Lord.
(Srimad Bhagavatam----3:31:19----purport).

Sometimes in a dream we get a particular type of body with which to work in the dream. I may dream that I am flying in the sky or that I have gone into the forest or some unknown place. But as soon as I am awake I forget all these bodies. Similarly, when one is Kṛṣṇa conscious, fully devoted, he forgets all his changes of body. We are always changing bodies, beginning at birth from the womb of our mother. But when we are awakened to Kṛṣṇa consciousness, we forget all these bodies. The bodily necessities become secondary, for the primary necessity is the engagement of the soul in real, spiritual life. The activities of devotional service in full Kṛṣṇa consciousness are the cause of our being situated in transcendence.
(Srimad Bhagavatam----3:33:26----purport).

In the association of pure devotees, one becomes attached to hearing and chanting the glories of the Lord. In this way one can cultivate Kṛṣṇa consciousness, and as soon as this cultivation is advanced, one can become faithful to the Lord, devoted to the Lord and attached to the Lord, and thus one can very quickly attain full Kṛṣṇa consciousness. The secret of success in the cultivation of Kṛṣṇa consciousness is hearing from the right person. A Kṛṣṇa conscious person is never disturbed by the bodily necessities—namely eating, sleeping, mating and defending.
(Srimad Bhagavatam----4:29:39-40----purport).

Unless one is associated with devotees, he cannot cultivate Kṛṣṇa consciousness. Nirjana-bhajana—cultivating Kṛṣṇa consciousness in a solitary place—is not possible for the neophyte, for he will be disturbed by the bodily necessities (eating, sleeping, mating and defending). Being so disturbed, one cannot cultivate Kṛṣṇa consciousness. We therefore see that devotees known as sahajiyā, who make everything very easy, do not associate with advanced devotees. Such persons, in the name of devotional activities, are addicted to all kinds of sinful acts—illicit sex, intoxication, gambling and meat-eating.
(Srimad Bhagavatam----4:29:41----purport).

As stated in Śrīmad-Bhāgavatam (11.9.29): viṣayaḥ khalu sarvataḥ syāt. Bodily necessities-eating, sleeping, mating and defending-are all very easily available in any form of life. It is stated here that the vānara (monkey) is very much attracted to sex. Each monkey keeps at least two dozen wives, and he jumps from one tree to another to capture the female monkeys. Thus he immediately engages in sexual intercourse. In this way the monkey's business is to jump from one tree to another and enjoy sex with his wives. The conditioned soul is doing the same thing, transmigrating from one body to another and engaging in sex. He thus completely forgets how to become free from the clutches of material encagement. Sometimes the monkey is captured by a hunter, who sells its body to doctors so that its glands can be removed for the benefit of another monkey. All this is going on in the name of economic development and improved sex life.
(Srimad Bhagavatam----5:14:32----purport).

Kṛṣṇa is the creator of the entire cosmic manifestation, yet He is unattached to it. If we were to construct a very tall skyscraper, we would be very attached to it, but Kṛṣṇa is so renounced that although He has created everything, He is not attached to anything (na badhyate). Furthermore, although Kṛṣṇa has His transcendental form, sac-cid-ānanda-vigraha (Bs. 5.1), He is not disturbed by the bodily necessities of life, which are called daihika; for example, He is never hungry, thirsty or fatigued (na hanyate deha-gato 'pi daihikaiḥ). Then again, since everything is Kṛṣṇa's property, He sees everything and is present everywhere, but because His body is transcendental, He is above vision, the objects of vision and the process of vision. When we see someone beautiful, we are attracted. The sight of a beautiful woman immediately attracts a man, and the sight of a man naturally attracts a woman. Kṛṣṇa, however, is transcendental to all these faults.
(Srimad Bhagavatam----5:19:12----purport).