Vasudeva and Devaki did not obtain the Supreme Personality of Godhead as their son very easily, nor does the Supreme Godhead accept merely anyone as His father and mother. Here we can see how Vasudeva and Devaki obtained Krsna as their eternal son. In our own lives, we are meant to follow the principles indicated herewith for getting good children. Of course, it is not possible for everyone to get Krsna as his son, but at least one can get very good sons and daughters for the benefit of human society. In Bhagavad-gita it is said that if human beings do not follow the spiritual way of life, there will be an increase of varna-sankara population, population begotten like cats and dogs, and the entire world will become like hell. Not practicing Krsna consciousness but simply encouraging artificial means to check the population will be futile; the population will increase, and it will consist of varna-sankara, unwanted progeny. It is better to teach people how to beget children not like hogs and dogs, but in controlled life.