Why not follow our separated brethren of the Protestant faiths, and choose what doctrines we wish to believe and what commandments we wish to obey?
Buchanan was just quoting Hillaire Belloc, who is worth reading. Did we begin to believe at the Reformation, or did we lose faith in the miraculous? The Reformation not only destroyed the unity of faith and ecclesiastical organization of the Christian peoples of Europe, as Belloc argues, but also sowed the seeds of modernism, which has proceeded down a slippery slope of rationalization for 500 years (including the socialism you mention), and has given rise to the endless division into sects and never-ending disputes among churches, and could not but lead to the complete unbelief which we see today as the religious corrosion continues. No, the magic of the medieval Church is not what it was, but only because our view of it is colored by the modern-Protestant world in which we now live, one in which the sacred and sacramental character of everyday life, attended by an expectation of the miraculous around every corner, is no longer self-evident, no longer part of our mentality. The world has become drab, colorless, faithless.
Don’t ignore the consequence of Lutheranism: War among Christians, and the most horrific kind of war, driven by fanatical hatred. Both sides were complicit in the most brutal crimes, neighbor turning against neighbor as Christians had once against the Saracens, neither giving quarter because each thought God was on his side.
It also depends on what your, as you say it "evangelical p faith" stands for -- for instance, do you hold to the beliefs espoused in the Nicene Creed?
We believe (I believe) in one God, the Father Almighty, maker of heaven and earth, and of all things visible and invisible. And in one Lord Jesus Christ, the only begotten Son of God, and born of the Father before all ages. (God of God) light of light, true God of true God. Begotten not made, consubstantial to the Father, by whom all things were made. Who for us men and for our salvation came down from heaven. And was incarnate of the Holy Ghost and of the Virgin Mary and was made man; was crucified also for us under Pontius Pilate, suffered and was buried; and the third day rose again according to the Scriptures. And ascended into heaven, sits at the right hand of the Father, and shall come again with glory to judge the living and the dead, of whose Kingdom there shall be no end. And (I believe) in the Holy Ghost, the Lord and Giver of life, who proceeds from the Father (and the Son), who together with the Father and the Son is to be adored and glorified, who spoke by the Prophets. And one holy, catholic, and apostolic Church. We confess (I confess) one baptism for the remission of sins. And we look for (I look for) the resurrection of the dead and the life of the world to come. Amen."
With a number of representatives from a number of other Christian communities came to the installation of Pope Francis, it is a sign that the prayer of Christ that all believers be one as from John 17 is coming to reality over the course of time.