What’s so great about Catholicism
Some reasons why I love my Catholic Faith:
1) We trace our comunity back to Jesus and the Apostles. He gave us Word and Sacrament, experienced in community, to continue to feed us until the end of time.
2) We've done it all, the worst and the best, to some degree or other, which both gives us good reason to be humble and good reason to continue to strive to do great things.
3) Through the roughest centuries of Western civilization, our monastic tradition preserved the classical heritage that remains the basis of Western culture.
4) Our social justice teaching has been forged over centuries of history, giving positive major impetus to societal and economic policies and structures, challenging institutions of all kinds to work for the common good.
5) Our Church has maintained a profound respect for the human mind, being a major force in the development of schools and universities.
6) From the time of Jesus, the dignity of women and children, the priority of family, respect for every human being have been protected and fostered.
7) Our Church has fostered the development of science, striving to maintain its accountability to a higher order. Science is not an end in itself. Just because we can doesn't mean we ought to.
8) Our Church fosters the totality of human nature, including its respect for music and the arts.
There is more, to be sure, but these strike me as good beginners to the answer the question; What is so great about Catholicism!