Similarly to bitcoin what happens in the event of my dismissal since no relative knows about my investment. It doesn't really make sense if my family can't enjoy my wealth. Will it be lost or is it good to entrust someone incase I'm no longer there?
You must not allow your self to grow old and die without telling at least one person that you so much trust about your investment. It is not bady to tell at least one person about your investment. You can not loss trust for all your family relatives and you can not trust all of them but there is always one person among them you can trust. If you don't also want to trust anyone, then keep a trace for them to have access when you are no more.