You may believe that nonsense but it was those same unerring church fathers speaking authoritatively who established the practice of making people pay to get their relatives out of purgatory which set the stage for the Reformation. One hundred years later the unerring church fathers admitted that the earlier group of unerring church fathers was wrong.
You may think you understood Protestantism but if you did you would not have made the claim that:
since your rely on your reasoning abilities and nothing more
Protestantism is carefully reviewing and studying doctrines and theology against the scriptures and church history. Although I have a Calvinist belief, I can and do worship in a Southern Baptist environment very comfortably because, while we may differ in doctrine, we have the same core beliefs. And I can verify any Protestant churchs doctrinal integrity by looking at the scriptures, the history of the church, and doctrinal statements.
You are not as fortunate. There is nothing from which to verify the accuracy of the Catholic teaching except what you are told. I just hope the church fathers dont make any other errors.
Protestantism is carefully reviewing and studying doctrines and theology against the scriptures and church history.
...and arriving at conclusions with your own authority, thereby making each Bible-thumper who can read his own pope. What "doctrinal statements" do you study? Those of Calvin? Is he the final authority? Do you realize that holding the true doctrine given by Christ is required by God and that by worshipping with those who you "differ in doctrine," you are contradicting the very Scriptures you profess to uphold?
"Whosoever revolteth, and continueth no in the doctrine of Christ, hath not God. He that continueth in the doctrine, the same hath both the Father and the Son. If any man come to you, and bring not this doctrine, receive him not into your house nor say to him, God speed you. For he that saith unto him, God speed you, communicateth with his wicked works." (2 John 9-11).