They believe that to gratify the senses unto the end of life is the prime necessity of human civilization. Thus there is no end to their anxiety. Being bound by hundreds and thousands of desires, by lust and anger, they secure money by illegal means for sense gratification.
Bhagavad-gītā As It Is
By His Divine Grace A. C. Bhaktivedanta Swami Prabhupāda
Chapter 16, Text 10-12
The Divine and Demoniac Natures
TEXT 10
kāmam āśritya duṣpūraṁ
dambha-māna-madānvitāḥ
mohād gṛhītvāsad-grāhān
pravartante ’śuci-vratāḥ
kāmam—lust; āśritya—taking shelter of; duṣpūram—insatiable; dambha—pride; māna—false prestige; mada-anvitāḥ—absorbed in conceit; mohāt—by illusion; gṛhītvā—taking; asat—nonpermanent; grāhān—things; pravartante—flourish; aśuci—unclean; vratāḥ—avowed.
The demoniac, taking shelter of insatiable lust, pride and false prestige, and being thus illusioned, are always sworn to unclean work, attracted by the impermanent.
Purport
The demoniac mentality is described here. The demons’ lust is never satiated. They will go on increasing and increasing their insatiable desires for material enjoyment. Although they are always full of anxieties on account of accepting nonpermanent things, they still continue to engage in such activities out of illusion. They have no knowledge and cannot tell that they are heading the wrong way. Accepting nonpermanent things, such demoniac people create their own God, create their own hymns and chant accordingly. The result is that they become more and more attracted to two things—sex enjoyment and accumulation of material wealth. The word aśuci-vratāḥ, unclean vow, is very significant in this connection. Such demoniac people are only attracted by wine, women, gambling and meat eating; those are their aśuci, unclean habits. Induced by pride and false prestige, they create some principles of religion which are not approved by the Vedic injunctions. Although such demoniac people are most abominable in the world, still, by artificial means, the world creates a false honor for them. Although they are gliding toward hell, they consider themselves very much advanced.
The Hare Krishna Movement 