Act as a visionary sociologist with expertise in alternative societal structures. Describe a fictional society where people age based on their level of happiness. The happier an individual is, the slower they age, while those who are unhappy age rapidly. Detail how this system affects [social hierarchies], [economic systems], and [cultural norms]. Explore the implications for [family dynamics], [work-life balance], and [government policies]. How do people pursue happiness in this world? What happens to those who struggle to find joy? Be creative and thorough in your world-building, providing vivid examples and thought-provoking scenarios.