It's not so much Protestants as such, and I understand the "Hey, we agree on the important stuff," answer. It's the wide, wide range of Sola Scriptura opinions that I want to get a grip on. Arianism, non-Trinitarianism, Sabbatarianism, the whole Millerite family, not to mention the less exotic disagreements of Arminianism v. pedal-to-the-metal TULIPism.
I'm not trying to score some point here. There IS a need for Catholics to give some account for Father Joe Easy who teaches his flock that, yeah, there's Humanae Vitae and all,, but if you have to contracept, well, you gotta do what you gotta do.
And there continue to be examples which are less blatant examples of disobedience, like the so-called "Fundamental Option" theory which J2P2 expressly condemned, but not in a ex cathedra way.
But in the RC Church I am confident, as I was not in the Episcopal Church, that if someone comes to Father A and asks if it's okay to have an abortion and he says yes, I can go to a Bishop or a document and point out that no, it's not okay.
In the Episcopal Church you used to be able to get whatever answer you wanted by asking the right priest. NOW a priest who was pro-life would take a LOT of grief and probably shuffled off to some "Anglo-Catholic" ghetto -- which, no doubt would be peopled by homosexuals and alcoholics.
When I was a chaplain in Boston, I was having a late supper after a rough evening and saw the elderly Rector of the nearby ex-tuh-REEM-ly "high" Church of the Advent being gently and respectfully assisted out of his barstool and to the door. He was almost too drunk to walk. I thought, "Hey, THAT's a great witness!"