Hmm, interesting well, as you should know the key is to access the assets, and that key cant be shared if you want security. If you've lost the key or anyone doesn't have it he cant access the Bitcoins in the wallet. So you need to pass the key but there is a huge risk haha, as I had mentioned already if anyone has the key he can withdraw all the funds. More interestingly haha in reality people store Bitcoins for their hiers. I use to keep my keys mostly in a place and few of my family members know where. As you know haha Death is the reality and it can be on the head anytime.
Only that is indeed a way to pass on assets to heirs when we are gone, but I do things a little differently, not only giving keys but also providing understanding and knowledge about the Bitcoin investments that I have done, I hope they will have the same goal as me and one day they will be able to continue what I have been doing.
I can because my family members have grown up, and I think they deserve it.
The private key/Seed phrase needs to be properly guarded if it needs to be stored in the safest place like most people store other valuables. Losing the private key will close access to opening the wallet, nothing can be retrieved when the private key is lost. Educating heirs also needs to be done as early learning or introducing Bitcoin to them earlier than expected.
The understanding and knowledge about Bitcoin investment that is obtained from people they believe is more easily accepted than that taught by others, we can explain to them the uses and advantages of Bitcoin. Showing transaction history to them is also needed to increase their interest in learning about Bitcoin investment, heirs need to be given an understanding so they can cash out assets when something happens to us.