With which, it is asked, the purpose is to try to care for children, which are guaranteed
Are they disabled / disabled etc? Half and quarters of humans all their not very long lives all the way burden both their parents and (indirectly) taxpayers? What is the percentage of great and talented in this category "people"?
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Man is a social animal. And that’s what made him the most successful organism in his class. No predator stands against the tribe of men. The tribe needs their support. Feed the useless old people, they will teach you what you do not know. To contain painful children - will come up with such, fire, for example, to use. Interestingly, societies with eugenic preferences have not survived to our days.
But here are the examples you wanted: Da Vinci and Isaac Newton were born premature. Kant is painful from birth. Helmholtz was born with a watermelon and spent his entire childhood in bed. Julius Caesar and Fyodor Dostoevsky are epileptics. Einstein, Goethe, Diesel, Dickens had all the signs of schizoid psychopathy.