This krsna-katha will also be very much appealing to the most materialistic persons because Krsna’s pastimes with the gopis (cowherd girls) are exactly like the loving affairs between young girls and boys within this material world. Actually, the sex feeling found in human society is not unnatural because this same sex feeling is there in the original Personality of Godhead. The pleasure potency is called Srimati Radharani. The attraction of loving affairs on the basis of sex feeling is the original feature of the Supreme Personality of Godhead, and we, the conditioned souls, being part and parcel of the Supreme, have such feelings also, but they are experienced within a perverted, minute condition.
Therefore, when those who are after sex life in this material world hear about Krsna’s pastimes with the gopis, they will relish transcendental pleasure, although it appears to be materialistic. The advantage will be that they will gradually be elevated to the spiritual platform. In the Bhagavatam it is stated that if one hears the pastimes of Lord Krsna with the gopis, from authorities with submission, then he will be promoted to the platform of transcendental loving service to the Lord, and the material disease of lust within his heart will be completely vanquished. In other words, such hearing will counteract material sex life.
This book, Krsna, which is filled with krsna-katha, will thus appeal equally to the liberated souls and to persons who are trying to be liberated, as well as to the gross, conditioned materialist. According to the statement of Maharaja Pariksit, who heard about Krsna from Sukadeva Gosvami, krsna-katha is equally applicable to every human being, whatever condition of life he is in.
From Srila Prabhupada’s Krsna Book — Introduction