I hear you Byblos, but in Mallz' defense--and it would be good, I think, or you to be more open about this--
most Catholics deeply misunderstand their own faith. That's not surprising given how incredibly nuanced it is. I for one get and deeply appreciate the doctrine of
Madre Dei, but how many people are going to put the time into studying it as I have? And more, how many people have the resources to do that? How many even know to ask the questions? And when you ask one question, it just raises another one. That doesn't make it wrong--it just makes it easy to
get wrong. So it should be very unsurprising to meet Catholics, but current and former, who are clearly at odds with the official magisterium.
And let's me clear about the magisterium, too. This isn't just a matter of paying attention to your priest, because while there certainly may be areas that everyone agrees (say the Mother of God--I don't know, I haven't talked to many priests about this), you know very well that there are schools of thought within the priesthood and bishopric itself that point to deep divides. The bishop over my area borders of vitalism . . . I can tell you that he
discourages the completion of Advances Directives and Living Wills (to say nothing of POLST orders, DNR/Pluses, etc.). There are liberal priests, especially in the West . . . you know their debate with the last three popes.
Now, if your priests are getting it wrong and aren't willing to submit to historical Catholicism, you ought not be surprised when current and former Catholics have wrong ideas about the faith. I'm not at all using that as an argument against the faith (although I do think it does support my central argument against it that you've heard a million times and that I won't repeat here). That would just be an ad populum fallacy. But I
am saying that, from a strictly apologetic perspective, perhaps you would do well to start with the admission and even assumption that most Catholics get it wrong. Perhaps there is more reformation due in your church to put a greater emphasis on teaching doctrine (and philosophy, since that is so important to the Church) to the masses. I don't know the solution. What I DO know is that a lot of terms you all use--and even terms that Protestants have taken from you (e.g., "Christ is fully man and fully God"; "One God susbsists in Three Persons," etc.) are very apt to be misunderstood. How many non-Catholics get the Trinity wrong? Omnipotence? Omniscience? How many churches have split over election?
People get stuff wrong because it's nuanced. A problem rather unique, though, to Catholicism is precisely due to the fact that you have such an old faith with such a very long and very strong intellectual tradition. It has become very, very, very open to misinterpretation.
Just some thoughts for whatever (little) their worth.