My dad is in stage four thanks to cigarettes. Sorry, no sympathy for the bad habit and anticipate you’ll be long dead and buried for your bad habit long before me and my bad attitude. Give it up, save yourself!
Sorry to read about your anger issues.....
Freedom is what it is......
FWIW-
You sure about that "settled science"?
Native Americans smoked tobacco for a thousand years before the arrival of Europeans, and they didn't suffer from lung cancer. My granddad smoked for 70 years, and never even had a smoker's hack. He died in his eighties of unrelated causes. The last chest x-ray I got showed no traces of tar on my lungs, even after 45 years of smoking.
It's my opinion that there's lots of junk in the science behind lung cancer, and the link to tobacco use as a primary cause. If it were true, Congress would have banned tobacco for human consumption long ago. No, the powers-that-be found a way to hold a gun to the heads of one of the most lucrative industries in the world, and have robbed them of a great deal of their income. That's ALL it's about.
I don't doubt that your dad has cancer, but I doubt anyone knows the true cause. You and his doctors have merely gone into agreement with a questionable regime of studies which claim that it's related to tobacco use. I trust that about as much as I trust the 'studies' on man-made global warming.