I'd prefer decent parents teaching kids to do the correct thing for the right reasons
Description of 'correct' is carried through centuries with the help of religion. That's the most important part of the religion, that it creates a foundation of moral thoughts. Since it's information age, that you 'reach' everything through a single search query, you think you're god now. But you forget that vast majority of the thoughts that keeps the society awake and in a living condition is because of moral experiences of our ancestors carried to our age with religion.
Civilization has been a long journey. All these 'uber genious' atheists were existed in all ages. 'I know everything better than everyone' people became majority, society corrupted, then a new page with a new "sin" was added to testaments. Even if all these religious sayings, and prophets etc. were man-made, not god-made, someone considering himself clever enough, should respect them. Because an idea that would affect billions of people for centuries is nothing they could dream of to produce.