Yes, exactly, everyone has anecdotes. I knew someone who did "all the right things," as recommended by the most mainstream medical advice, ate low fat, exercised, kept track of his bloodwork, etc., and dropped dead on a hike right around the same age. It happens.
Doing all the right things won't guarantee survival to age 100, 80, 60, or even 40. I think about it like this: We're all born with a genetically determined maximum life span that is unknown to us. Our environment and our choices cannot extend it -- they can only shorten it. It's great that your friend did all the right things, because he would likely have died sooner if he hadn't. Ultimately, he got a raw deal, and I wish medical science had been able to do better for him. There are a lot of dedicated, smart, honest people working to improve our understanding of disease and its prevention so stories like your friend's will end at age 90. n=1 experiments are useful for hypothesis generation, but they can never answer a non-trivial question.
