This is because our civilization was not built on sustainable principles. Hence, crime, violence, drugs, greed, and other social ills. The evening news tells much of the story. Most families are stressed beyond their recuperative abilities. The educational system has failed to educate a majority of children beyond a basic level.
Standards are lower.
Schools are often violent, chaotic, and depressing places for children to be. Essential nutrients were mined from it long ago. Now the bulk of our food is empty calories with consequent loss of health and vitality. The current system has failed to maintain the health of the population. Drug resistant strains of many diseases are on the rise.