And the history of the world is in large part a history of religions.

Refusing to expose your child to any religious information is stupid.  

How can you understand the 30-years war if you don't even know the difference between a Catholic and the varieties of non-Catholics which resulted in 6 million deaths.

Or the Crusades.  

Or the Inquisition.  

Or the Holocaust.

Or why most of South America speaks Spanish but Brazil speaks Portuguese.