Why not?

I have never found it in his writings, but a St. Louis professor who had been his student told me that the great confessional Lutheran theologian Peter Brunner regularly said that a Lutheran who does not daily ask himself why he is not a Roman Catholic cannot know why he is a Lutheran. That impressed me very deeply. I was thirty years a Lutheran pastor, and after thirty years of asking myself why I was not a Roman Catholic I finally ran out of answers that were convincing either to me or to others. And so I discovered not so much that I had made the decision as that the decision was made, and I have never looked back, except to trace the marks of grace, of sola gratia, each step of the way.