Even if this is all true (and assuming those people with stereotypical healthy lifestyles didn't die from car accidents or something entirely unrelated to lifestyle), these are a very small number of data points to establish a pattern, in comparison to the actual amount of data we have. Sedentary living and obesity are associated with a far shorter average life span, with death from a wide range of chronic conditions being much more common. If you want to eat fast food and smoke more than you move, that's your business. But ignoring vast amounts of data and cherry-picking a few anecdotal examples to support why what you're doing may be best... you've wandered into HAES levels of foolishness.