Pre-Vatican II, the liturgy was God-centered, an elaborate ritual that was refined continuously and reverentially for more than 1,600 years.  Catholics could go to any church in the world and participate in what was essentially the same ritual that their ancestors attended.  There was also the reasonable expectation that their descendants were going to essentially the same God-centered ritual.    Vatican II changed all that and turned it into a Man-centered ritual in line with the fundamental shift turning the Church from being a cult of God to, in Paul VI's own words, "being a cult of Man" . . .  less supernatural, more humanistic and therapeutic with every generation.

That fact you currently have a majority of US Catholics who support abortion, homosexual marriages and euthanasia tells you all you need to know about how disastrous that fundamental shift in church orientation has been to the spiritual lives of millions of Catholics.