That is the negative side. But on the positive side, the road is definitely shorter for those who are born into a spiritual family. The family life-tree has already started bearing fruits. Then if a child is born, he can start eating those fruits right from the beginning. This will strengthen him. If he starts eating those fruits right from the beginning, there is every possibility that in his childhood and adolescent years, his very presence will inspire others. He will not remain aloof; he will mix with others, but they will see something very, very special in him because spirituality has its own vibration and aura. Some will feel this vibration around him unconsciously, while others — very few — will feel consciously that there is something unusual in that person.
To come back to your question, it is a great, great advantage to take birth in a spiritual family because the spiritual alphabet — the ABCs — one learns very quickly. Again, it may happen on rare occasions that someone can take birth in a spiritual family and then, unfortunately, that person may become undivine to the extreme. He may not follow any spiritual path. He may go his own way and do all kinds of undivine things. This kind of sad experience can happen. Suppose there are two sons in the family. One can be spiritual to the extreme and the other one, in spite of having the promise to become just like his brother, may take a wrong turn in his life. Then he is lost.From:Sri Chinmoy,Sri Chinmoy answers, part 21, Agni Press, 2000
Sourced from https://srichinmoylibrary.com/sca_21