Yes, I did when dealing with non-Catholics…what justification is there when engaging them? For me it is a term of fidelity to the Holy See and of felial affection toward the Successor of the Apostle Peter.
The personal salutations you cite are perhaps genuine reflections of the writers’ esteem for the addressees or a form long used within the Roman Empire, or courteous salutations comfortable in that age the early to middle 5th century. The rise of what we call the Middle Ages is generally ascribed to 476 AD, close. In the 21 st. Century they are increasingly an anachronism still used in the secular world and, imo, regrettably in the ecclesiastical world.
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