Some cultures weigh the death of a child vs. the death of an old person in a way that makes the latter a much more severe loss, given the unique wisdom accumula

Some cultures weigh the death of a child vs. the death of an old person in a way that makes the latter a much more severe loss, given the unique wisdom accumulated over years. I believe it is the opposite in developed countries today due to lower birth rate and the tendency to preserve inordinate amounts of information arguably making the wisdom of an old person seem mostly useless.