They'll not be able to follow all the regulative principles; therefore they must commit all kinds of abominable activities. Under the circumstances the śāstra or God has given a concession that you simply chant Hare Kṛṣṇa mantra and gradually you will be elevated to the highest position of spiritual life. Other things you cannot follow. You are already fallen. So you take to this process of chanting Hare Kṛṣṇa mantra without any offense.
And in order to save yourself from the offenses, a little austerity, that you cannot have illicit sex life. Why should you have illicit sex life? Everyone's need is sex life. Āhāra-nidrā-bhaya-maithunam (Hitopadeśa). These are the bodily needs. So śāstra has sanctioned, "All right. You can live peacefully by married life and have sex life for children, good children." That is allowed. But why should you have illicit sex life? What is this? Irresponsible life. "I shall not take responsibility of family life, and I shall go on as so-called bachelor and have illicit life." But that is not good. That is garhitāṁ. Na sādhu mānye: "This is not good." This is the advice of Vedic literature.
Ultimately you'll suffer. You are thinking at the present moment that you are avoiding suffering, because family life is very responsible life. So if you think that family life is responsible, yes, it is responsible life. If you don't take, if you cannot take the responsibility, then remain as a brahmacārī. Why should you marry? Yes. If you practice brahmācārya, then you become free, seventy-five percent freedom immediately.