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?
Just let them be. It is not a sin not to invest in Bitcoin and it is not the end of the world for them if they miss out on Bitcoin. If the parents are so eager to invest in Bitcoin why not they do it themselves. Pushing someone to do something that they do not like will only result in a conflict.
People have their own decisions and now that the kids are already adults why not respect their decisions after all I am sure these parents already have good enough BTC savings for their family to live in luxury for several generations since as these parents are so entusiastic about Bitcoin.