With age does come the compression of intelligence into wisdom, but also the re-enforcement of biases, fallacies and physical dysfunctions due to the hardening of neural network and deteriorating physiology. Many in the old generations end up being stubbornly bull-headed instead of composed thinkers capable of adaptation and new practices.

That adaptation, they need the young for.. whom they also need to be their slaves in thought, behavior and provision. And if the young are of "melanin" than even better as it goes for the impotent sickly "olds" in western countries. Aging is in many ways "learned" and "passed along".