My family knows where to find my recovery phrases and other pieces of information to recover all my coins, but they don't have a copy of anything in their hands. There is no reason for them to have copies of the seeds for cold storage. They know what they have to do and where to look for the essentials for recovery if one day I don't come back home. That's it. My family isn't interested in Bitcoin, only I am. I am sure they will gladly convert in into fiat one day when I am gone.