Where you make the mistake is that God took human form in the Person of Jesus Christ His son not to 'confirm' but to 'restore' the righteousness of mankind which had been lost at the Fall. Faith and reason tell us that this is the only purpose He could possibly have had.
Where you learned the Catholic Faith is an absolute mystery to me as the doctrine of "original sin" is an article of Faith yet you deny it. Our greatest joy at Christmas is that God became incarnate in order to redeem mankind from all his iniquities yet you regard this as a "sad state". What woefully strange take upon Christianity.