It's Celibacy, Stupid
Hans Küng focuses on one of the more obvious and most fixable causes of the Church's sex abuse problem:
Of course, celibacy is not solely responsible for these crimes. But it is the most important structural expression of the Catholic hierarchy’s inhibitions with regard to sexuality, evident also in its attitude toward birth control and other questions. In fact, a glance at the New Testament shows that although Jesus and Paul led celibate lives, they left others complete freedom to do so or not. Based on the gospel, clerical celibacy can be advocated only as a freely-chosen calling (charisma), not as a compulsory rule for everyone. Paul decisively contradicted those contemporaries who were of the opinion that “it is good for a man not to touch a woman.” As he wrote, “to avoid fornication, let every man have his own wife, and let every woman have her own husband” (1 Corinthians 7: 1-2).