I have a close friend who is a Calvinist and wrote a homeschooling curriculum based on the vast history of Western Civilization. It is well known in homeschooling circles. She spent many years reading history and writing her books. She told me that she discovered that all Protestants owe a huge debt of gratitude to the Catholic Church, because without it there would be no Bible, no universities, no Christian foundations of faith. She said everything we have the Catholic Church safeguarded for our use today.
Don't forget population control...We'd be crowded out of existence had the Catholic religion not removed the life from as many non Catholics as they did...