Indoctrination doesn't work like that. The seeds planted and watered in a childs mind from birth by those they trust the most and the entire world around them. Whether there is a god or not is immaterial because the views of the child will almost always be slanted towards what the parents and society believe.
In most cases they don't became true practiciens of the religion until they figured it out by themselves or trough self experiences.
I don't know if you'll understand what i mean and sorry for my english
