This thought have been bothering me for a while and I feel we can discuss it here. Many people that are building their Bitcoin portfolio are doing it to also save for the coming generation. However, how this wealth will be transferred to the heirs and the next generation and how this wealth will be preserved without being lost or causing problems still remain unclear.
Have a will, the will should have the private key to the wallet where your bitcoin are been stored for the benefits of passing it onto your heirs. What I do is to have separate wallets so I have bitcoin that I can spend or sell to reinvest when the market is experience a dump and I also have another wallet that I send in Bitcoin to the wallet occasionally for hodling and I'll pass that wallet to my heirs when I have one, for now I don't have any children but I'll be open to having some in the future.
You have to get a respected lawyer and be willing to trust the lawyer to pass on the will without interfering and stealing the bitcoin in the wallets. Use a recognize firm that they won't want to destroy their reputation by stealing one client wealth knowing it'll affect the trust of the firm.