I finally understand the reason for Sola Scriptura
I can't believe it took me this long to realize this but: from the Israelites, to the Pharisees, to the Church at Corinth, to the Church at Ephesus, and to the Churches of Revelation; the institutional (visible) Church and the People of God have always been impure and in constant need of reform and renewal. That's why Protestants believe in Sola Scriptura, because Sola Scriptura is the implicit charge that the visible Church, the People of God, can and have erred.
This is what will inoculate me from chasing after Rome, this is what will keep me grounded.
Praise be to God!