Odd, you seem to have concluded that I am opposed to ritual, and turn to mocking graduation ceremonies to make your point.  But the comparison is telling: you recognize the rituals are created by people to fulfill a human craving.  Purely manmade, just like the rituals of the chruch.
Jesus engaged in some jewish rituals.  The Catholic Church does not perform those rituals, like Passover seders.  Why does the Church not do as Jesus did, if the basis of its rituals is purportedly the practice of those rituals by Jesus?