I had some tough nuns in elementary school but none were really abusive. I also had some nice ones. At my recent high school reunion those of us who went to that Catholic elementary school got together and it turned out that nobody was really traumatized by their Catholic upbringing and we all turned out OK.Same
The best teacher I ever had was a Jesuit who washed out and got married but still taught religion and history at my catholic high school.
For all the problems they have, the catholics sure have a lot more figured out than the holy roller protestants
And Mel Gibson