My mom and her five siblings all smoked, and so did their dad. Their mom never smoked, but lived with seven smokers. Her dad eventually got lung cancer shortly after my mom and dad were married, and died a year and a half later, at just 66 years old (16 days away from turning 67). My mom's oldest brother quit, but started up again. He died 6 years ago at 61, also from lung cancer. Her second oldest brother is 66 now, and still smokes. Her younger brother quit, but the damage had already been done. He was diagnosed with stage 4 stomach and esophageal cancer 6 months before he died at 56 a little over two years ago. Her youngest brother is 53 and also smokes. My mom quit shortly after her dad died, but she always says she could start up again!