We have to become vāsanā-less—without any vāsanā, means without any material desires. Vāsanā cannot. . . It is therefore not actually to make it null and void, but to make it purified. That is the aim of human life: to purify our desires. That purification is possible by Kṛṣṇa consciousness. Sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam (CC Madhya 19.170). If you simply desire how to serve Kṛṣṇa, then that is really desirelessness. Desirelessness means not to become without desire. You desire to serve Kṛṣṇa, then these material desires will automatically finish. Sa vai manaḥ kṛṣṇa-padāravindayor (SB 9.4.18).
So you fix up your mind at the lotus feet of Kṛṣṇa, then non-Kṛṣṇa desires will be finished. Sa vai manaḥ kṛṣṇa. Everything will be there: the hands will be there, the legs will be there, the eyes will be there, the ears will be there—everything will be there. But if you change your desire, they will be purified. It is not to make it null and void. No. The hand is there, but if you engage your hand in cleansing the temple, then you are transcendental. If your. . . If you walk to go to the temple, then your desire for walking will be spiritual. If you smell the flower offered to the Deity, then your desire for smelling so many scented things will be finished. If you eat prasādam, then your desire for going to the restaurant and making satisfied. . . satisfaction of the tongue will be finished. Therefore if we simply desire eating, sleeping, mating—everything, even mating also. . . If you desire that "If I can beget a child who will be Kṛṣṇa conscious," then you have sex life. Otherwise stop it.