Kinda funny that after everything he did Parkinsons was what got him.
In other words, the average lifespan of a 10-year old boy is not 65.8 additional years.
But you’ll have chain smokers who live into their nineties.
Let's not forget Ozzy's immense wealth that allowed him the best medical care and health/fitness programs in his later years. He stopped living "hard" by the 2000s, at least by his 1980s standards.
Had he kept living hard he wouldn't have made it.