My father grew up Catholic, studied to become a priest, began to disagree with some key Catholic teachings during his studies, and left. He never became a priest. Afterwards, he met my mom. I have a Catholic side of the family, and a Protestant side of the family. Any and all drama over his conversion to Protestantism seemed to have died down by the time I came along. In addition to what he taught me, I've done my own reading on the subject.
You need to be able to articulate your differences, and why your differences are in fact Biblical and historical. That won't be good enough for many Catholics, but at least they won't be able to argue with you outside of appeals to authority, which to them isn't fallacious when it would be in any other context. And if you can disarm that argument, they have nothing.
You also have your testimony. Since my father left Catholicism, he has been the most devout out of all his siblings. He is the only one who never got drunk. He is the only one of them who has not divorced. He is likely the only one of them who did not fornicate. If Catholics were to use the argument of knowing a tree by its fruit fairly, they would see the fruit in his life.
He has in fact kept contact with them, and we have gone to the Catholic church for baptisms and funerals. He affirms that his siblings believe the Gospel too (though I have serious doubts about my cousins). He's not a crazy anti-Catholic.
In those respects, I strongly recommend that you emulate my father. I hope that you will find a church home that blesses you. We've been non-denominational growing up.
