I understand that at a personal level you would want to share wealth with your children and their children, but that is not what copyright is about. The intention is that the creator gets to make their earnings out of their original product for a limited time only. So that they can continue to make original products and make a living. It is not intended to provide for your family for generations. While this may be what it has become with the help of corporations, in my opinion this is not it’s intended use.
Aside from that I think your works should become public domain after a limited time, prefferedly during your lifetime. So that as much as possible people get to enjoy your original works of art.
You make a good point about generational wealth in business and I think there should be limits to that as well. It doesn’t help the world at all if wealth just stagnates like that and in my opinion it should be shared with those doing the actual work, instead of a select few who were born in it, were extremely lucky, or gained money in immoral ways.
I’ll leave it at that since I am not the right person to go into a discussion with you about all of these things. I do want to thank you for your work and for gifting us with your books entertaining us and giving us an escape of daily problems, expanding our knowledge with educational content or whatever else. Know that you are valued and there are people out there being touched by your work.