I will not try to correct the misunderstandings (and that is exactly what those things are). I wish only to talk about why I decided to join the Catholic Church.
Another point that concerned me for several years (and the misunderstanding of which kept me from joining the Church) was the "5 points". Reformed people are very fond of quoting Augustine, and rightfully so. Being a theologian in the first few centuries who taught the doctrines of grace, he gives considerable weight to the reformed position of those doctrines. Reformed people are also fond of believing that although the Church once taught those things, over time it gave in to semi-pelagianism, a heresy similar to pelagianism. It is believed that the Church now officially affirms what it at one time renounced as heresy. If the Church changed like that, I thought, then it can't be what it claims to be. And I thought that for several years. Then I discovered something this past summer. The church's stance on those doctrines have not changed one bit over time. The difference is between what the Church "requires" to be believed and what the Church "allows" to be believed. Not every one of Augustine's or Pelagius' doctrines were in question or officially upheld. Some of what Pelagius taught was condemned (no original sin, man can come to God based on his own abilities). Some of what Augustine taught was upheld (original sin, man can not come to God unless God first gives him the grace to do so). Other doctrines were left open for different schools of thought. To this day, a Catholic is perfectly free to believe all that Augustine taught. We are "allowed" but not "required" to be Augustinian. We are allowed to believe in an effectual calling. We are allowed to not believe in an effectual calling (for example). However, we must believe that one cannot save one's self, nor even take any steps toward faith and repentance without the prevenient grace of God. Beyond that, there is room for different schools of thought.
That was the big thing PREVENTING me from joining the Church for a few years. Once I realized that I didn't have to give up my beliefs in the doctrines of grace, it didn't take much to bring me the rest of the way to the Church.