If you're a bitcoiner abd still interested in making an inheritance for your children then you're considerable enough in planning for the future because the children you don't plan for will not takecare of you in old age, this begins with you teaching them to know about bitcoin, investing a little amount of money into bitcoin for each one of them individually on a decentralized wallet and leaving behind for them a means through which they can acess your wallet later in life.
If they are not willing to learn bitcoin now you cant force them to, but you can leave a gap between now till they grow older to discover how the world is evolving round about the bitcoin digital technology, they may be the oes to decide by themselves to learn about bitcoin when seing those around them already into bitcoin.