The real issue remains authority - at least for me. I am not attracted to sola scriptura Protestantism but liberal Protestantism does appeal to me. Perhaps it's just because I personally need the freedom to seek and weigh and question rather than have to believe what any church sets down as absolute truth. I guess I've come to the conclusion that this world is simply too mammoth, mysterious and miraculous for our finite minds to comprehend. So I live by faith in God, but am not convinced that we need to accept all sorts of doctrines, some of which were easier to believe centuries ago when there was more superstition and less education. For example, do I believe that St. Padre Pio levitated and bilocated? Try as I do, I don't. As for the stigmata, not sure.
Sometimes it can seem as though traditional Catholicism is a modified polytheism. True, saints are not seen as gods, but they are venerated, their intercession is requested, they exist for about every cause, vocation, country, etc. I even have trouble when I read that Mary, as much as I salute her, is Queen of the Universe, etc. That, to me, suggests that she has to be a goddess.
Am I getting off the topic? Sorry. I really prefer to stay out of these Catholic vs Protestant encounters, but they are alluring. The God I worship looks at our hearts and not at our church affiliation. Heaven, I suspect, will be full of people from bizarre religions. They will be surprised to see us, and vice versa. My family heritage is mixed Catholic/Protestant and it's painful to read some of these wild accusations based on religious prejudice, often the result of false information.