A Weird Post-Religion Thing, Maybe Help?

[Brometheus]

Not sure if this helps, but when I was faced with decisions regarding when to expose my children to the nastier bits of existence for the purpose of instruction I always reminded myself that I was raising future adults and not children. The distinction being that it was my responsibility to prepare them as best I could to navigate existence on their own. I gave them a knowledge of Christianity, but I can't think of an argument where indoctrination would support the mission.

I would also consider what would happen if their future selves left religion via discovery as you have done. If your current quandary is born from some protection instinct, imagine the back peddling you'll have to do when they ask why you allowed them to suffer through some form of Christian indoctrination? 

Best to give them the truth. When and how is part of the art of the dream job, but my recommendation is early and often to the extent their cognitive development can handle. There's no playbook, children are unique.

That was remarkably helpful, thanks!