" he found himself woefully unprepared for the flat pitch of life out of uniform. “I discovered that I couldn’t really speak to civilians,” he continued. “My marriage fell apart. All I could see was this long dark tunnel closing in, ending in infirmity, old age, and death. Then I started to climb, and the sport provided most of what had been missing for me in civvy street—the challenge, the camaraderie, the sense of mission. "

― Jon Krakauer , Into Thin Air: A Personal Account of the Mount Everest Disaster