One of the best gifts that a parent can currently give to their children is leaving an investment for them or teaching them about investment. There have been many topics about how teaching children about investment opportunities especially with bitcoins. From all those discussions, many of the opinions and perspectives are about not forcing your children to learn about bitcoin investment when they are too young.
But what of when your children are now of age and still not showing an interest in learning about bitcoin for future investments regardless of your efforts, do you pressure them then for their own good?
I really appreciate of your approach to educating your kids on Bitcoin.
Being perfect to tell them about it without forcing it upon them is the primary thing here.
With the passage of time, they can get more interested on their own, especially if they get some pocket money

Leaving bitcoin investments for your kids isn't really a good move. There are other investments "By the books " with very nice ROI. The problem is the risk involved in transferring hodlings. The internet can be a very dangerous place for those that are not properly informed. The only exception where leaving hodlings for your kids plays out safely is if they have proper understanding and interest in both privacy and Decentralisation. Else you may end up hodling for a random scammer or hacker to steal in the end..
your points about the drawbacks of leaving BTC as an inheritance is really a matter of concern.
As Cryptocurrency is a digital asset, it can be easily lost or stolen and that is a huge risk if the owner or inheritor is not technologically knowledgeable and proper precautions are not in place. The most important thing is that the beneficiaries know how to keep, use and protect their bitcoins with privacy and decentralization to be the main.
Or you could also consider the option of incorporating Bitcoin into a proper estate plan

With this solution, you may use multi-signature wallets that allow the heirs to receive the assets in a secure manner after the owner's death or custodial services.
And the very process of teaching your offspring about the fundamentals of cryptos and money management could be a proper solution

First and foremost, we should prepare children to manage such digital assets in a mature manner, whether or not they choose to engage with Bitcoin immediately. They could stay safe if we were able to provide them proper knowledge and tools they need.