At what age should a child be introduced to religion?

[John 6IX Breezy]

After they turn 12, but do so in an open and inquisitive way. They have to realize that they are free to be intellectually independent and that moral responsibility is more important than belief.

I find 12-14 an interesting age. Anecdotally I've noticed that most people who either leave religion or join religion do so at that period.