I am unashamedly a Protestant. I believe in sola scriptura, sola fidei, solus Christus, and the rest. I am convinced that Luther was on to something when he articulated his view of justification succinctly: simul iustus et peccator (“simultaneously justified and a sinner”).
But with the birth of Protestantism there necessarily came a rift within the western church. By ‘necessarily’ I mean that Protestants made it necessary by splitting from Rome. Jaroslav Pelikan had it right when he said that the Reformation was a tragic necessity. Protestants felt truth was to be prized over unity, but the follow-through was devastating. This same mindset began to infect all Protestant churches so that they continued to splinter off from each other. Today there are hundreds and hundreds of Protestant denominations. One doesn’t see this level of fracturing in either Eastern Orthodoxy or Roman Catholicism. Not even close.