Sorry, but it is NOT. It's just another language.
"It remains a parent language -- and a sure 300 point advantage on the SATs, BTW, for precisely that reason."
Irrelevant.
"It remains a universal language for the entire church. I could attend Mass in Mexico, on a Dutch island, a French island, or in Haiti, and hear the same Mass."
Not today, you can't.
"Another distinct advantage is that it is of all the languages except Italian the easiest and most beautiful to sing."
Now you're being completely ridiculous.
English is difficult to set -- the only composers who have carried that art to a perfection to rival Palestrina and the other Latin composers are the English Renaissance musicians - Byrd, Tallis, Farrant, et al.
Latin chant is easy to sing and easy to learn. We should use more of this great "patrimony of the church."
Your utter opposition to Latin is what is ridiculous.
The Mass is about more than just language. The current Mass is not just a vernacular version of the traditional Mass. It goes against what Vatican II called for for the Mass.
You may not like it, but Vatican II said that Latin was the language of the Church and Pope John Paul II reiterated it.
"Sorry, but it is NOT. It's just another language."
Not JUST another language, a 'dead' or fixed language with a universal set of defined words. It allows for certainty in an uncertain world.