Janma karma me divyam (BG 4.9). How Kṛṣṇa expands Himself, how He appears, what is the nature of His body, these things if you simply understand, then you become immortal. That is Kṛṣṇa consciousness movement. Just to give the people a chance to understand Kṛṣṇa, then he becomes immortal. That is the mission of life. Not that to enjoy sense gratification in a polished way, but the business is the same as the dogs and hog enjoy. That is being instructed here. Nāyaṁ deho deha-bhājāṁ nṛloke kaṣṭān kāmān arhate viḍ-bhujāṁ ye (SB 5.5.1). Viḍ-bhujām means the pigs, who eat stool. They're also enjoying like that. They have got very free sex enjoyment. They do not care who is mother, who is sister—with anyone. We have seen, that is . . . nature has got examples. Everything, you can study.
You'll find in Śrīmad-Bhāgavatam that by studying nature you can get so many instruction, perfect. So one devotee made the nature his spiritual master, and studying nature and getting so much information. So if we study like that, here as it is given, the example, viḍ-bhujāṁ ye. So viḍ-bhujām means the pigs or the hog. They are also eating nicely, getting fat, and having sex intercourse very freely, so does it mean that human being is also meant for this business, like the hogs and dogs? This is the point. This is the instruction.
This body is not meant for such enjoyment of the senses, but this body is meant for tapaḥ, austerity, as Raghunātha dāsa Gosvāmī showed example. He came to the point of nil. How to come to that point, tapasya. Why? By that process your existentional position will be purified. And if you say: "What is the use of purifying?" there is use, because you want happiness, but your happiness is disturbed. You cannot have perpetual, uninterrupted happiness in this body. Therefore, if you really want happiness, then you purify your existence and you'll get continued eternal happiness of bliss and knowledge. This should be the aim of human life.