I also get the impression that many Catholics can’t understand just how odd the Catholic Church can appear to someone raised Protestant, how alien its emphases are from what one takes to be Christianity.
You quote an excellent post that Linda Marie made, but with your leave I’d like to turn it on its head. For someone reared Protestant, with Protestant assumptions, the dilemma, the stakes, and the internal dialogue may sound more like this reversal of one of her passages: “Choosing this Church risks giving God less than wholehearted worship, adoration, and obedience. It says that one will only accept God on that Church’s terms and rejects–or farms out–the guidance of the Holy Spirit.”
There are quite a few good answers Catholics could make (and probably have made) to that hypothetical statement, but I offer it to show you that Protestants aren’t just being dense or willfully blind here. Catholicism isn’t the theological slam-dunk that a cradle Catholic might imagine, and though I mean no offense to the OP, I think he has fallen into the cardinal sin of apologetics–underrating the strength, the sincerity, or the good faith of the other side’s arguments. It’s a common error among Protestants, as well.