Leonard Nimoy is 82 and he probably has a few more years ahead of him. Was he planning on living to be 1000 years old?
Smoking has pluses and minuses.
If he didn't have COPD, he'd probably live another 5 or 10 years longer than whatever he's got.
COPD is one of the more painful ways to die. It's like breathing through a straw.
I will back this argument with a family case.
My grandfather is 91. Smoked for most of his life. He now has emphysema, and we fear he will not see another year.
Except for his lungs his health is perfect. He could easily live another 10 years. Not even "normal" problems like cholesterol, blood pressure or anything. Perfect health at 91. Except for having lost 80% of his lung capacity because of smoking.
Watching him is one of the main reasons I quit smoking 2 years ago. Just in time, according to my pneumologist, to avoid lung damage (my long are still considered normal, but were closing in on borderline).