The difficulty of explaining "why I am a Catholic" is that there are ten thousand reasons all amounting to one reason; that Catholicism is true.
I could fill all my space with separate sentences each beginning with the words, "it is the only thing that. . ." As, for instance,....
3. It is the only thing that frees a man from the degrading slavery of being a child to his age.
4. It is the only thing that talks as if it were teh truth; as if it were a real messenger refusing to tamper with a real message. ..
6. It is the only large attempt to change the world from the inside; working through wills and not laws; and so on.
Hat Tip: Joshie and Maria for beginning me to read this genius for so long!