I am not keen on a dystopian thought police. We have at the moment a lot more care given to children than to adults. For example children's hospitals VS adult's hospitals.
The idea is not drawn out to further conclusions as you have done, but I had to ask why we do the thing where we care about children's hospitals more than adult's hospitals, and generally decided that I don't like the way it is.
I believe common behaviour to like children more comes out of some measure of, "they are cute" and is similar to why we like baby animals more than fully grown ones. Simply because they have a babyness to them. If that is the case then it's a relatively unfounded belief and a bias that I would rather not carry.
Adults are (probably) productive members of society, we can place moralistic worth on that life as it stands in the relative concrete present, not the potential that you might be measuring when a child grows up. Anyone could wake up tomorrow and try to change the world, or wake up tomorrow and try to lie around on the beach. What causes people to change suddenly? Not part of this puzzle. I am confident that the snapshot gives a reasonably informative view of someone's worth. They are working hard in EA? That's their moral worth they present when they reveal with their actions what they care about.
What about old people? I don't know... Have not thought that far ahead. Was dealing with the cute-baby bias first. I suppose they are losing worth to society as they get less productive. And at the same time they have proven themselves worthy of being held/protected/cared for (or maybe they didn't).
The urge to protect and prioritize children is partly biological/evolutionary - they have to be "cute" otherwise who'd put up with all the screaming and poop long enough to raise them to adulthood? The urge to protect and nurture them is a survival-of-the-species thing. Baby animals are cute because they resemble human babies - disproportionately big heads, big eyes, mewling noises, helplessness.
But from a moral perspective I'd argue that there is a greater moral duty to protect and care for children because they can neither fend nor advocate for...
If it's worth saying, but not worth its own post, then it goes here.
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