Why can't Krishna's Bhagavad-Gita become human law book?

Now a days, hardly anyone, even in India, the land of God Himself, is interested in spiritual matters, ie. matters of the soul.

In the age of Kali, everyone is born as a sudra - kalau sudra-sambhavah - and as a result the world runs on material principles - principles that center around bodily and mental gratification. We live in a culture where the body and its relations are being fed and nourished profusely, while the soul is being starved to death.

Even religion, which is supposed to nourish the soul, in the modern age has become a matter of bodily affairs, a matter of nationality, with no information on the soul.

Of course, this is all to be expected when ungodly forces manage world affairs.

Krishna says:

Fools deride Me when I descend in the human form. They do not know My transcendental nature as the Supreme Lord of all that be. —Bg 9.11

Those who are thus bewildered are attracted by demonic and atheistic views. In that deluded condition, their hopes for liberation, their fruitive activities, and their culture of knowledge are all defeated. —Bg 9.12

Srila Prabhupada explains:

There are many devotees who assume themselves to be in Krishna consciousness and devotional service but at heart do not accept the Supreme Personality of Godhead, Krishna, as the Absolute Truth. For them, the fruit of devotional service -- going back to Godhead -- will never be tasted.

Similarly, those who are engaged in fruitive pious activities and who are ultimately hoping to be liberated from this material entanglement will never be successful either, because they deride the Supreme Personality of Godhead, Krishna. In other words, persons who mock Krishna are to be understood to be demonic or atheistic.

As described in the Seventh Chapter of Bhagavad-gita, such demonic miscreants never surrender to Krishna. Therefore their mental speculations to arrive at the Absolute Truth bring them to the false conclusion that the ordinary living entity and Krishna are one and the same. With such a false conviction, they think that the body of any human being is now simply covered by material nature and that as soon as one is liberated from this material body there is no difference between God and himself.

This attempt to become one with Krishna will be baffled because of delusion. Such atheistic and demoniac cultivation of spiritual knowledge is always futile. That is the indication of this verse. For such persons, cultivation of the knowledge in the Vedic literature, like the Vedanta-sutra and the Upanisads. is always baffled.

It is a great offense, therefore, to consider Krishna, the Supreme Personality of Godhead, to be an ordinary man. Those who do so are certainly deluded because they cannot understand the eternal form of Krishna. The Brhad-vishnu-smrti clearly states:

"One who considers the body of Krishna to be material should be driven out from all rituals and activities of the sruti and the smrti. And if one by chance sees his face, one should at once take bath in the Ganges to rid himself of infection."

People jeer at Krishna because they are envious of the Supreme Personality of Godhead. Their destiny is certainly to take birth after birth in the species of atheistic and demoniac life. Perpetually, their real knowledge will remain under delusion, and gradually they will regress to the darkest region of creation.

Just to give an idea of how rare it is in general to meet a person dedicated to the Absolute Truth, King Pariksit says:

"In this material world there are as many living entities as there are atoms. Among these living entities very few are human beings, and among them, few are interested in following religious principles.'

"O best of the brahmanas, Sukadeva Gosvami, out of many persons who follow religious principles, only a few desire liberation from this material world. Among many thousands who desire liberation, only one may actually achieve liberation, giving up his material attachment to society, friendship, love, country, home, wife and children. And among many thousands of such liberated persons, one who can understand the true meaning of liberation is very rare.'

"O great sage, among many millions who are liberated and perfect in knowledge of liberation, only one may become a devotee of Sri Narayana, (Krishna). Such devotees, who are fully peaceful, are extremely rare."

--Srimad Bhagavatam 6.14. 3-5