1. Retirement Leads to Boredom and Purposelessness for Driven People
High-achievers struggle post-retirement without structure or impact. "The time I was most free was also the time I was most miserable." - nsoonhui
"People with the drive to be able to retire early are also the most likely to be bored when it happens." - canpan
2. Work Provides Identity, Meaning, and Fulfillment
Purpose derives from contributing via work, not leisure. "Because it's the meaningful work that sustains life and provides happiness." - nsoonhui
"When you define yourself solely by work, you lose your entire identity when you retire." - stavros
3. Brin's Return Boosted Gemini/Google AI
His involvement credited for recent AI resurgence. "Sergey unretires, Gemini suddenly becomes the top LLM." - LarsDu88
"Google's AI efforts have truly seen a resurgence in quality with his return." - arjie