I was raised in a strict Christian cult (not sure of a better word for it).
I guess the best description of me is agnostic.
I refuse to take my children to my parents church, it is in our court orders that my ex can't take the kids to said church.
My DP is atheist.
We talk openly with the girls about all religions and DD11 did RE at school until she came home saying DP and I would go to hell as we didn't believe in God. So neither of my DDs do religion.
DD8 tells everyone she is Buddhist and she does a lot of reading about Buddha.
DD11 says she doesn't believe in God or anything.
We talk about acceptance of people as a whole rather than acceptance based on what religion they are or what God they believe.
So far we have talked about Buddha, Islam (that came up as DD8 thought they were bushrangers), Christianity and Pastafarian .
I would never not disclose my faith or lack there of. It is nothing to be ashamed of, just as their thoughts and beliefs are nothing to be ashamed of.