Protestants try to build their churches on their interpretation of written text, this is not the Church Jesus founded. These are human churches, with human doctrines, they had nothing to with the Bible, and have no authority to interpret it.
Jesus founded an Apostolic Church, with Apostolic Government. These were the Preachers and qualified interpreters of Scripture that interpreted Truth and sound doctrine from Scripture, along with determining the Canon itself.
The Church is more than what's written in scripture, it is not confined to scripture, or confined further to the fallible opinions of men.
Ask why your interpretation is of greater authority, who are you to interpret scripture? That is the important question.
We have a different foundation.
Ours is built on the very words of God through the Master Church builder, the great Apostle Paul.
We don't assume any succession as that is the assumption of the RCC.
The letters John wrote to the Churches were addressed to the "angel" the individual pastors of those Churches.
They were organized by the words of Christ directly to the pastors.
We follow the Scripture to "study to show ourselves approved of God" and searching the Scriptures to ensure the truth.
Yes, we have many problems with the emphasis being placed on certain areas of the Scripture and not the whole Word of God.
Whether we stand of fall, we for the most part are standing alone on the Word of God.