I have a new perspective towards what it means to keep things private. I am thinking that keeping things private does not always mean keeping things to yourself. Before you criticize, I know that to have someone as trusted as that is rare and almost impossible, but they still exist, and sometimes you can find that person in your spouse. If you can share important details like passwords of bank account or safe, or grant them access to important documents, should we not also be able to trust these people with access to our bitcoin wallet?
Anyways, I'm against trusting someone when it comes to sensitive information like that. Yes, family members might be loyal to you to the death but you can't be 100% sure. There are many cases when things went wrong between family members. I think you can trust your mother and father more than wife or kids. I know many of you might tell me that this is the other way but today, men have less rights and wives don't care about divorce. Kids are kids and they aren't reliable.
I actually get your point but something is there is definitely no one you can trust 100% but you must still have to trust your family, in my proportion the trust is first the child or your next of kin then parent and then maybe wife and reason why the wife is last is because she can get a divorce and switch allegiance. The parent you even stated can easily share this information with other family members who might not even be the once you want around your holdings.
Bitcoin holdings are like the traditional savings you need to give a clue to where it can be access not to lose everything when you’re no longer alive most especially if this holdings are for inheritance purposes. It can most surely be in your will or you split the funds in multiple wallet or multi sig share the signing keys with different people.