No Roman Catholic of any real sincerity would consider mere disillusionment with that denomination to be grounds for leaving it. Yet, mere disillusionment with Protestantism is often treated by Roman Catholics as if it were grounds for defection. Protestants find out that they’ve been taught a bunch of phobia-driven revisionist nonsense about Church History, or that their denominational leaders are not what they thought, and suddenly it is okay to talk to dead people and bow to things.
And then, on the other side, there is a whole industry claiming that all is rosy since everything important to ever think about was settled a few centuries ago by a Protestant document, and that anyone who says otherwise is really trying to recruit for Roman Catholicism or Eastern Orthodoxy or the “emergent church” or whatever. One almost wonders sometimes if some Protestant apologists wouldn’t prefer to lose more Evangelicals to Rome if they could just make sure that the rest who stayed were more reactionary and more nostalgic for some special period of alleged Protestant prosperity and for some utopian Presbyterian homeland of that age.