Love you too Frank.
I attended Catholic school and went to Catholic Church my entire life. It was not till very recently that I began to understand my faith and its roots. It is more beautiful than I could have ever imagined. Most Catholics are poorly formed and don't understand where they come from in the why. Same can be said for all dominations in reality. I am not in the place to sit here and give you the historical or theological answer. Others have done that much better which is why a reference the book. Is ultimately up to us to gain our own salvation. I can't do it for you or anyone else. I am not into treating the Bible like a deck of cards where one tidbit trumps another. Catholic we believe in the fullness of faith which encompasses all of what the Bible states and sacred tradition as taught by Christ.
If you must know If the Catholic Church was the church that Christ founded look here:
https://www.catholic.com/magazine/pr...christ-founded
Secondly, never said you have to be Catholic to make it to heaven. That is not my belief or the Church's. Sure is a lot easier though.