What would you change about modern society?

I want to several changes in the modern society are given below-

1. We should banned mobiles in schools and colleges for students so that they concentrate on their studies..
2. Live-in relationships should be banned as increases in the murders of both boys and girls and also dirt our culture.
3. We should banned on smoking cigarettes, alcohol, drugs, pan masala. and many more to reduce the risks of cancer among common people.
4. Stop celebrating Valentines Day, which may affects our culture.
5. Legal action should also taken on those women who killed their husbands for money and boyfriends.
6. Dowry law should be changed as several women take advantages of this law and blackmails their husbands so increase in suicides of male individuals in society.
7. Reduce cuttings of trees and forests, which may harmful for our environment.