A common argument for Roman Catholicism is that Rome has no disagreements within her official teachings whereas Protestant denominations often disagree. That sentiment presupposes that disagreements create confusion for those who by grace seek the truth contained in Scripture. ("Which denomination should we trust for our source of truth? All seem equally sincere.") Such thinking leads to an additional premise, that truth can be more readily acquired by looking to a source that claims to pronounce with utmost clarity and infallibility Christian doctrine - yet while denying the lucidity of the original source from which this ecclesiastical magisterium supposedly derives its doctrine and authority(!). The implication is that God in his word is not as clear as those who would speak on his behalf (but that Scripture is somehow clear enough to derive the Roman See). But what if those who claim infallibility are deluded, if not liars? What if Rome not only interprets Scripture wrongly on essential matters of faith and morals but also goes beyond Scripture in order that she might gain authority over conscience that is not divinely appointed?
Given this unlawful, allegedly authoritative, mediation of the Roman magisterium one can never have full assurance of faith while remaining true to the implications of his communion. Yet God who is love would have us set free from such tyranny, to worship him by grace in peace.
Theology aside, Jesus told us we can know false shepherds by their fruit. Don't the thousands of perverted acts along with Rome's attempt to cover them up accuse her justly?
Jesus was clear when he said: his sheep hear his voice; they follow him; he gives them eternal life; and nobody will pluck them from his or his Father's hand. That is why I also know that when Rome denies doctrines like perseverance of the saints that it is not Christ who is in error but Rome. That is just one reason why I hate Roman Catholicism. It’s not that she’s often wrong; rather her claim of infallibility while she errs is repugnant.
So, it’s rather easy to hate Roman Catholicism with a holy
hatred once one knows the Christ of Scripture savingly and realizes how Rome has blinded so many who need the forgiveness of sins in Christ.