Warren Buffett is resigning as CEO but remaining chairman. He once said retiring would be 'unthinkable' and worse than death.

Warren Buffett

Nati Harnik/AP

• Warren Buffett is in the final stretch of his six-decade run as Berkshire Hathaway's CEO.
• But at 95, Buffett intends to remain Berkshire's chairman and assist his successor.
• The investor has said he loves Berkshire and retirement would be "unthinkable."

Warren Buffett is days away from stepping down as Berkshire Hathaway's CEO, but at age 95, he's skipping retirement to stay on as chairman. That's not a shock from the investor...