no body know when he die, only god know when will we die, by the way if we have many bitcoin in our wallet most better we gave the key from the password to our family or we can give to our best friend who we can trust him, it will be useful when we die our friend who know the detail or our bitcoin wallet could access to our bitcoin and can used it for the needed to your family in the next time.
Yeah and that's why we need one trusted person to use our wallet in case of an emergency. Otherwise all the funds would be gone forever and our family wouldn't be able to use them.