Do you want to take your Bitcoin with you when you're gone?
Let me hear it from your own opinions...
When I die, my bitcoin will be handed to one of my family whom I really trust my bitcoin account for them. It is better if they will know it earlier so they will not be shocked if I will hand it over to one of them my account so they will know how it can help their life to live in a good and luxurious house if they already have the enough amount to buy for those things that are luxurious and they can also use it to travel other countries that they want to travel.
LoL, you mean, you're going to give your keys after you die through a dream or handing it when you're a ghost.. Joke.
I got your point this time. It's better to give them your key without knowing what do that key for. When you Die, they will know how to access it and they will remember that you handed them a paper that has the wallet key written on it.