Jimmy while I agree with the rest of your post, I don’t agree with the first sentence of yours that I have quoted. I find I use the following quote all the time, for many different reasons; I guess you could say it is my favourite quote from the Church Fathers:"[T]here are many other things which most properly can keep me in [the Catholic Church’s] bosom. The unanimity of peoples and nations keeps me here. Her authority, inaugurated in miracles, nourished by hope, augmented by love, and confirmed by her age, keeps me here. The succession of priests, from the very see of the apostle Peter, to whom the Lord, after his resurrection, gave the charge of feeding his sheep [John 21:15–17], up to the present episcopate, keeps me here. **And last, the very name Catholic, which, not without reason, belongs to this Church alone, in the face of so many heretics, so much so that, although all heretics want to be called ‘Catholic,’ when a stranger inquires where the Catholic Church meets, none of the heretics would dare to point out his own basilica or house" **(Against the Letter of Mani Called “The Foundation” 4:5 [A.D. 397]).
-Augustine
I find it a comfort that Augustine encountered the same objections that we do today. Anyway, while I completely accept the name, Roman Catholic Church, if a stranger were to inquire where the Catholic Church meets, I am sure that every person would point out the local Roman Catholic Church.