Seems to be a deep instinct in human beings for making everything compulsory that isn't forbidden.
Robert A. HeinleinLike every living thing its prime characteristic is a blind, unreasoned instinct to survive.
Robert A. HeinleinIn ascending order the qualities of Patriotism are: 1. To work, fight, or die for your own survival. 2. To work, fight, or die for your immediate family. 3. To work, fight, or die for a group, extended family, tribe, or clan. 4. To work, fight, or die for a group too large for all the individuals to know each other. 5. To work, fight, or die for a way of life.
Robert A. Heinlein