The danger of misguided purpose
Purpose is the strongest form of human expression. Through its channeling and application man can create wonders in architecture, environmental design, manufacturing, health and many more. But as with all things there needs to be caution of misguided intent.
Best real life examples are: Nazi Germany, Stalins Communistic State or Moas China. Or fictional ones: 1985 by Orwell, Brave new World by Huxley, Utopia by More, etc...
All started out with good intentions and the promise of the perfect utopic future. But all of them were base on shaky moral, political as well as social views and values. Thus leading to their ultimate downfall in one form other another. Though not without sacrifices of life, morals or freedom of choice. Thereby creating a living hell for everyone in reach. A true dystopia.