I think the same idea holds true for the obese because they tend to die early, as well.
Being old and sick is incredibly expensive. Living healthily enough to get to be old and sick is a monetary drain from insurance companies' perspectives.
Lethargy has never gave anyone a stroke
But drinking 20 coffees a day for staying awake working 80 hours a week for your startup while you could easily have a normal job, that grants you a normal, quite life, had.
Live, quite unfortunately, is rarely so black-and-white.