They can trace back to Jesus and the Apostles, while Protestants can’t.
Of course, Protestants would have a very different perspective on this. Protestants would say that some time during the Middle Ages, Christianity in the West lost its way with the Mass, communion under one kind, confession to priests, purgatory, indulgences, shrines, veneration of saints, clerical celibacy, maintaining liturgy and scripture in a language that ordinary people couldn’t understand, an exaggerated role for the bishop of Rome, and so on. They would say that what they did was actually bring Christianity back to the religion of Jesus and the apostles. Protestants would therefore trace a direct line from themselves back to the earliest Christians. The Anglican Communion, notably, explicitly traces its origins to the mission of St. Augustine of Canterbury, whose successor they believe to be the present archbishop of Canterbury, continuing an unbroken line of succession.
new death experiences proving religion is true.
Do you mean
near-death? You’ve typed “new” twice, so I’m not sure whether it’s just a typo. While some people do believe that these experiences offer proof for religious beliefs, many also believe that they can be explained as purely physiological phenomena. A.J. Ayer had a near-death experience, which did briefly make him consider the possibility of religion, but he quickly dismissed it as just normal brain activity during the final moments of life and went back to being resolutely non-religious.
I’m also not convinced that miracles and visions really prove Christianity to be true. I would say that believing in them is a matter of faith. Non-religious people are perfectly well aware of the
claims that there are miracles and visions, but it doesn’t make them become Christians. Instead, they look for errors in the reporting of these phenomena and/or non-religious explanations.
Personally, I would say that the reason I am a Catholic was originally because my parents are Catholic. Subsequently, I would say that I decided to practice Catholicism independently because of the strength of the moral teachings of Jesus. It seemed to me that Jesus offers us the best opportunity to live well.