"I disagree with Rome for what I believe to be its' errant Mariology and Christology and for its errant doctrines concerning Purgatory, Sanctification, Transsubstantiation and a host of other things"
The essence of protestantism is rejecting the spiritual wealth of the Church.
Most of the Catholic doctrines I reject did not exist in the first millenium. They were inserted later, starting in ernest with Gregory.
Christ dispenses salvation, not the church burocracy. Catholics and Protestants both tend to confuse the bride and the bridegown. That's just part of materialism.