Positive approaches leading to Catholicism include:
1: A rational approach to sin and forgiveness. The CofC is not Calvinistic or even Armenian, it is die with any sin not forgiven and dude, you’re going to Hell. All sins are equal to them, maybe some are more easily repented of, but they are all equally condemning. That is a poor way to live, and unscriptural too (Paul writes of degrees of sins). In the CofC it can lead to wholesale denial that something is sinful, often aided by discovering just how sinful everyone else is, or by overly scrupulous and joyless living. Forgiveness is not well defined after Baptism. One is supposed to publicly confess sin (“go down front”), but that is only if one is in a public sin. Otherwise one asks for forgiveness in prayer and tries to feel sorry. That can lead to sinning with abandon then saying a quick prayer asking for forgiveness before bed time. Presumption is not understood to be a sin. There is not a means to certain absolution that Catholicism has.
2: A grown up morality. One that while based on the Bible, is interpreted using defensible and repeatable logic to settle issues of the day. Things that old ladies get excited about are not always sins, some things “everybody” does are sinful. It puts a fence around the dangerous areas, without carrying over puritanical prejudices about other areas. We are to love God, knowing what makes Him happy and what does not is a gift not to be thrown away for a make-it-up-as-you-go approach. I have heard one preacher who endorsed abortion (based on his interpretation of Genesis), and have heard members who rationalized pre-marital sex and divorce. It also prevents one from being judgmental about non-issues.
3: One thousand and eight-hundred years of church history, some bad but a lot of it good. It literally built Western Civilization, defended it from the Mohamedian invaders, invented the university and the hospital, etc. The saints. The martyrs. Go to any Barnes and Noble, Books A Million, etc., and look at the Christian Religion section. 9 out of 10 books of serious theology books will be Catholic, it is deep and rich.
4: A sacramental aspect to life. No spirit good, matter bad neo-Gnostic dualism. Baptism and Marriage make more sense as sacraments.
5: The Eucharist and Mary being pre-figured in Old Testament typology. The Eucharist actually makes sense in the Catholic Church; the CofC “Lord’s supper” is a bizarre “reminder”, reminder of a goofy ordinance. What an odd way to tell people to remember one by. And how does one improperly remind themselves of something?
6: An assurance that the Church will not lapse into error. There have been some bad Popes and such, but they did not preach what they practiced. The Church has been consistently right about things (e.g., abortion) even before it was popular to be right. Any or all of the CofC preachers or elders could teach error at any time with only one’s individual private judgement getting in the way.
7: The ability to have a world-view that is in the world but apart from it. Instead of putting some Christian seasoning on the spirit of the age, Catholicism can stand against it. Dan Brown, the New York Times, et al, do not bother smearing the CofC, they are confident groups like that will go along with the age that is to come, just give it time, the Catholic Church is the enemy of the age.
At its worst it is sort of the Christian version of Islam: things are simplified to the extreme: 5 pillars of Islam—5 acts of worship and the 5 point plan of salvation in the CofC ; everything is in the Koran—and everything is in the New Testament; Imams are not ordained—preachers are not ordained; both are legalistic and both reject the development of doctrine through logic; both are non-sacramental; one is supposed to read the Koran in Arabic and CofC ministers are supposed to learn Greek to really understand the Bible; and neither really makes much of the Old Testament (i.e., no typology). Don’t get me wrong, the CofC does not do jihad and stone people and such, but some of them can be a little fundamentalist in the bad kind of way. A danger of that is that people burn out and then they have been-there-and-done-that when it comes to religion and they may lose interest in Christianity.