Thanks, Chris and Frank,
I want to clarify one thing that may have been unclear (and my apologies for that), in the OP etc, I am saying there are doctrinal reasons of principle (like the Kingship of Christ), why we are Traditional Catholics. Not just the Beauty and Majesty of Tradition. But I am not saying that our faith is based on any human reasons. Our faith is based on the authority of God revealing, as the Oath against Modernism teaches us. That is why, as the Holy Spirit makes possible for us by His Grace, we believe all that God has revealed.
the Western pre-Vatican II edifice
You seem to be neglecting the statistics cited earlier. Shall we take just Priests and Nuns in the US to begin with?
The number of Priests skyrocketed from 27,000 in 1930 to 58,000 in 1965 - a more than 100% increase in 35 years - as documented earlier. As for Nuns, there were 50,000 Nuns in 1900, which remarkably increased to 180,000 in 1965 - a 260% increase in 65 years - See
https://en.wikipedia.org/wiki/Catholic_sisters_and_nuns_in_the_United_States After that, it declined to about 50,000 again by around 2015. It doesn't take much to see that the 30-40 years after the Council were dreadful for both Nuns and for many religious orders of Monks. Some orders improved, many did not and closed down. Look at Nuns who were Sisters teaching in schools also.
There were some 50,000 odd seminarians as well, which also drastically decreased for many decades, before improving somewhat.
Roughly, without any Council at all, and allowing for other decreases over time, there may well have been over 150,000 Priests, some 400,000 Nuns, and perhaps 100,000 seminarians by now in the US if the Church had just continued as earlier. Are you sure this had nothing to do with Vatican II, the sixties and its aftermath? And if we have to go back to "western whatever", how do you explain 1900 to 1965?
Want another example? A nice Catholic country in Europe, perhaps? Let's take Catholic Ireland. We have statistics for 1958
https://lxoa.wordpress.com/2014/04/12/the-irish-catholic-church-in-1958-a-statistical-overview/A. Priests and People in Ireland (Statistics from Irish Catholic Directory).
1. Total Catholic population of all Ireland: 3,257,400.
2. Total number of priests in Ireland (1956): 5,489.
3. Proportion of priests to people: 1 priest for every 593 Catholics ...
3. Departures (for the first time) of Irish priests to territories under Propaganda (Statistics from Pagan Missions):
1935 1950 1956
Total 66 185 161
4. Total number of ordinations to the priesthood in Ireland during the year 1957 (Statistics from Irish Catholic Directory): 334.
5. Number of seminarians per 100,000 Catholics (Statistics from Herder Korrespondenz, May 1955):
Germany – 14
Holland – 18
Italy – 20
France – 22
U.S.A. – 26
Ireland – 75
Today,
https://www.irishtimes.com/news/social-affairs/religion-and-beliefs/number-of-new-trainee-priests-at-maynooth-hits-record-low-1.3233625 "Just six men have begun training for the Catholic priesthood at St Patrick’s College Maynooth this autumn, believed to be the lowest number since its foundation in 1795."
So, then, to the Church in Catholic Ireland that was simply booming in 1958, why has this happened? It's clear that (as even Pope Benedict XVI admitted) that the Council did not produce the results that were expected. Archbishop Lefebvre prophetically saw in 1966 (without the benefit of hindsight we have in which we can compare like above) that things were going terribly wrong. In particular, these warnings have proved prescient,
The consequences of this have rapidly been drawn and applied in the life of the Church:
Doubts about the necessity of the Church and the sacraments lead to the disappearance of priestly vocations;
Doubts on the necessity for and nature of the “conversion” of every soul involve the disappearance of religious vocations, the destruction of traditional spirituality in the novitiates, and the uselessness of the missions;
Doubts on the lawfulness of authority and the need for obedience, caused by the exaltation of human dignity, the autonomy of conscience and liberty, are unsettling all societies beginning with the Church—religious societies, dioceses, secular society, the family;
Pride has as its normal consequence the concupiscence of the eyes and the flesh. It is perhaps one of the most appalling signs of our age to see to what moral decadence the majority of Catholic publications have fallen. They speak without any restraint of sexuality, of birth control by every method, of the lawfulness of divorce ... "This was the point at which the Council found itself while preparing, by preliminary commissions, to proclaim the truth in the face of such errors in order to banish them from the midst of the Church for a long time to come. This would have been the end of Protestantism and the beginning of a new and fruitful era for the Church .. Now this preparation was odiously rejected in order to make way for the gravest tragedy the Church has ever suffered."
https://fsspx.news/en/news/exchange-letters-between-cardinal-ottaviani-and-archbishop-lefebvre-1966-38507As discussed elsewhere, given that there was a Council, this was what should have been done or reiterated, as Archbishop +Lefebvre and other traditional Fathers wanted (1) Canonize the Traditional Latin Mass, without change, as the only Mass of the Latin rite; (2) A dogmatic definition that Mary is Mediatrix of all Graces (3) A dogmatic definition of the necessity of the Catholic Faith for salvation (not leaving it open like now) (4) A dogmatic condemnation of Communism and anathematization of all its sympathizers (5) A dogmatic condemnation of the so-called "free love" movement that was beginning, as well as abortion, sodomy, contraception and the like; (6) A declaration of the Kingship of Christ and the Queenship of Mary and the obligation of all Catholic states to recognize it in their constitution (7) A Papal and Episcopal consecration of Russia to the Sacred Heart through the Immaculate Heart, as Mary requested, to obtain the defeat of Communism, the return of the Orthodox, and the Triumph of the Church, as She promised. This remains to be done.