When something is no longer appreciated, God takes it away. The Traditional Latin Mass was not appreciated much anymore, most people didn't try to save it during Vatican II. So God took it away. See, God allows evil as punishment, and also as a way to bring people closer to Him. It is part of His permissable will.
(boldface my own)
Thanks to everyone for your replies. All of you are of course correct. We must always look at any cloud and see if it has a silver lining, as SpiritusSanctus pointed out above.
I guess what staggers my mind is that the majority of the clergy and the laity had to be truly faithless in order for God to allow something as monstrous as false teachings even from the occupants of Peter's Chair, the destruction of churches and statuary, and taking away the Mass of All Time. This was no slap on the wrist, or just a wake up call. This was practically a knockout punch in the twelfth round. Were things really so bad in Latin America, for example, where half of all Catholics lived before Vat2, or in the Phillipines, or Africa? Does anyone know or just have suppositions?