One of the salient feature of our culture is वर्णाश्रम व्यवस्था. Division of 100 years of life into 4 sections is one of the most profound framework to help majority to live life fully! Not only that, it also sustain the society for eternal time-frame.
https://www.ucsf.edu/news/2018/11/412281/community-choirs-reduce-loneliness-and-increase-interest-life-older-adults
https://academic.oup.com/aje/advance-article-abstract/doi/10.1093/aje/kwy231/5133254?redirectedFrom=fulltext
