RE: The Balance Of Privacy

I agree with you on this

So, how long should the open-door policy last? Normally, it is advisable for as long as children are in their early, dependent years roughly up to age 9 or 10.

I said something on someone else comment, as soon as the child has reach their teenage age and are already going through puberty, there is a level of privacy that should be given to them, not all level of privacy but gradually and building trust, that way, it would be easy for both the parent and the child.