My grandfather(moms side), started smoking as a kid. Smoked for 40+ years. Quit for almost 20. Didnt stop him from dying from esophageal cancer. My other grandfather(dads side) though...seems to have beaten the reaper. Heavy smoker for all of his life till he was diagnosed with COPD. Still kicking at 89 years old. Yes...hes in rough shape...but still going. What kills one, doesnt kill another. And medically speaking, you arent declared legally dead until cardiac arrest. So no matter what, we all die of cardiac arrest.