I have read through many comments. Someone talked about
✅paper wallet,
✅Keeping a hard wallet with a lawyer and giving access to children after their departure to the land of the silent.
✅Another person also suggested teaching their wife's the know-how.
✅And many more suggestions, this suggestions are good but here are my view on each of them.

👉If a paper wallet is used with reference to a particular block when the bitcoins becomes accessible, my question is that, what happens in a situation where flood swept all the papers, or destroy them totally. If the papers are also kept with a lawyer, what happens if the lawyer pass the paper to their offspring before their death.

👉In the case of teaching the wife the know how of bitcoins is good but many have raised a concern about trust issues, if one have fear of trust on this particular case, then making it known to the wife becomes an unrealistic adventure.
Involving a third party can also open investors to hackers

 👉Having argue on some of this point, as privacy is topmost priority of an investor, it is very obvious that privacy is no longer existing  for user to transfer their asset to offspring since they will involve third person  . The best practice is to share the bitcoins to everyones wallet if they are of age and can manage what they have or make it known to the wife. of what value is it if you have the fear  of loosing all to your wife or lost everything to the air without anyone benefiting.
👉This very topic is serious and I will suggest that, there should be diversification so that bitcoins will not be the only way out in case this leads to family conflict or lost of bitcoins.