[sinkspur]

It breeds unity for those who speak different languages, rather than having separatist nationalistic churches. Unity in the Dogma of Faith. The language doesn't change, therefore, the dogma doesn't change.

Do the Eastern Rites not enjoy a Unity of Faith?

And let's be honest. The dogma does not change because there are Spanish and English Masses, and even a Latin Mass, in the same parish.

Perhaps Catholics SHOULD be allowed to choose. You'd be surprised at how few regular Mass goers today would opt to regularly attend a Latin Mass, of either stripe.

[Mershon]

"Do the Eastern Rites not enjoy a Unity of Faith?"

Had using the vernacular been useful in whatever evangelization that has been attempted by either Eastern-rite Catholics or Eastern Orthodox?

Has Greek Orthodoxy or Byzantine Catholicism taken the West by fire? How about the Russian Orthodox? They don't even have anyone attending in Russia.

Has Orthodoxy and Eastern Catholicism spread like wildfire throughout the world? If so, why are less than 1 percent of all Catholics of the Eastern rite?

Balkanized and segregated churches. Segregated language. Segregated Faith. It does not help in the spread of the Gospel.