The "Catholic" faith may be all of that but once it became "Romanized" it absorbed all sorts of pagan, Jewish and Hellenistic thought... a far cry from what the early Christians set out to do, this enculturation was established early and often and the meek and humble gave way to the formidable and imperial. These are just the facts of history, you can't dispute them but you will undoubtedly claim that your medievally-contrived tradition trumps all of that. 

To conflate "truth" and Roman tradition is a mistake of epic proportions, responsible for untold volumes of bloodshed and calamities. It's what happens when civilizations are indoctrinated into believing their eternal salvation depends upon temporal/external conquests, all the while Jesus promises the Kingdom of Heaven is within us (Luke 17:21) and admonishes us to worship the Father in spirit and in truth (John 4:23). Alternatively, of course, free will allows you to buy into Rome's rigid and exclusive, imperial "way of life."