Do the math from Vatican II if you want to know why the pews are empty in those age ranges.

No, I don't belong to a college community, but I do wonder what percentage of the student body were born into a Catholic family and attend the Merton Centers (which I'm guessing is essentially a social justice center, because that's what the colleges are pushing nowadays)

No, the Jewish kids live in regular old suburbia on the East Coast, and they attend religious-focuses classes, not social justice, feel-good activities.