How is the phenomenon of moral decay to be interpreted?

The deviation of morals from the Islamic methodology is a major calamity. Nations perish and plunge into darkness, desires, and misguidance, and the primary reason for this is distancing oneself from Allah's methodology and His Sharia (definition), which are safeguards and salvation. Moral decay begins within the family with the choice of a wife, which impacts the children who are the foundation of the nation. Other reasons include: abandoning enjoining good and forbidding evil, the corruption of educational curricula, and the lack of good role models.