I’m Catholic, converted 14 years ago from Evangelical Protestantism.
Catholics have the “three-legged stool” -Sacred Scripture, Sacred Tradition, and the Magisterium. This results in a more complete Christianity, one that doesn’t depend solely on human interpretation of the ancient Scriptures. The three legs support the stool firmly.
I don’t know much about Orthodoxy, although I admire their devotion through the ages, often under terrible persecution. I know that many Protestants, especially Evangelical Protestants, feel more comfortable with Orthodoxy than with Catholicism, so IMO, Orthodoxy provides a “door” for Evangelical Protestants to leave the fallacy of “sola Scriptura” and “faith alone.”
Protestantism of all types has the BEST MUSIC!!! I miss this so music and despair of Catholic parishes ever having good music. Catholics keep promoting chant, chant, chant, but it doesn’t lift us up and send us out the door singing like good German hymns, English hymns, American hymns, gospel, Hispanic, and all the other ethnic groups who have Protestant churches. I honestly don’t see why Catholic Mass can’t incorporate all these styles, at least in the OF Mass.
Also, Evangelical Protestants “get” fellowship and I miss this so much. The few times I have doubted the truth of the Catholic Church is when I realize that I and my husband and daughter feel so alone and unloved by our fellow Catholics, no matter how hard we try to find friends. I think that the Catholic Church should embark upon a study of “How Evangelicals Do Fellowship.” I’m serious about that suggestion. When people don’t have friends, they depart. Good fellowship could keep a lot of Catholics in the Church. It’s hard to stay in the Church simply by hanging onto the Truth of the Church. Truth without Love is hard to live with.