Does this apply to inheritance too? Why should we care what happens to our kids once we die?
To be fair, I have practiced shaivasana (“corpse pose”), specifically including “corpse don’t care” as a response to existential anguish arising and passing. But I also know quite a good bit about what it means to regret and long for second chances or a path not taken. I think it is quite rare for anyone (regardless of beliefs) to die without regrets. If you are able to pull that off for yourself, I’m glad for you.
In a belief system where there is a Creator, and the Creator is a Mother, all of Creation are her children. Thus, as humans, raising and nurturing a child is as much of an act of creation as art, music, etc. And conversely, our artistic creations tend to develop a life of its own.