Its easy to understand, when you step back and look at it objectively. Drink plenty of water, eat organically grown foods, get plenty of excercise, and like many others who do the same you may get cancer like they did. Patrick Wayne Swayze died of pancreatic cancer, and he lived a healthy life style, as far as we define one.
George Burns, eat, drank, and smoked, He lived to be 100 years old.
The truth is we cant predict the future and it seems very random to me who lives and dies.
Many we see as deserving death live, and many we see as deserving life, die.