The Roman Catholic religion says (a) “we have the authority to tell you things that are different from Scripture”, and then they say (b) “but when there is an apparent contradiction, you have to trust our interpretation, rather than your own, because we are authoritative”.
As a Roman Catholic, you can’t really even trust your own instincts. So, it’s no wonder that for the Roman Catholic convert, the motivation seems to be one of warding off “buyer’s remorse”, of convincing oneself, “yes, I’ve joined the right club. All the right people are here, see? G.K. Chesterton. Lewis got away. But look at Bouyer and Scott Hahn “the Great” and Richard John Neuhaus. They’ve done this. That’s how I know I’ve done the right thing”.
But in those moments alone, in prayer, it always becomes, “Who are you Lord?” Do I understand you correctly?
For the Protestant, it always comes down to Paul’s question: “Who are you Lord?” And we trust the answers we find in the Scriptures.
The Roman Catholic is motivated by an inferiority complex, which is always looking to others for assurance. The Protestant looks to Christ alone, and makes sure he understands him aright.