[JuniperMesos]

I don't think that old people today are systematically willing or unwilling to pass down their knowledge and experience. But an underrated phenomenon of the modern world is that human society is now changing quickly enough that the knowledge and experience that old people have gained over their lifetimes is very likely to be out-of-date, irrelevant, or even actively-counterproductive with respect to the conditions of younger people.

This is a massive change from the situation of most of human history, where your life was extremely likely to be substantially similar to that of your grandparents, so anything useful they had learned and could pass on to you was likely to continue being useful. The rate of change in human life really started to accelerate with the industrial revolution, now some three centuries old; but humanity is now in a state where massive changes are happening much faster than the passage of human generations.

[lifestyleguru]

Not really. Medicine, engineering, law all are a sum of intergenerational knowledge.

Yet everytime I deal with healthcare I encounter some <30 years old kids who learn medicine from scratch and have only 5 minutes of their time for me. Reading about medicine fells like reading science fiction. We seem to know everything about a human, yet in practice you might die or become crippled even from a trivial problem.