It's stress. I'm convinced of it. Little old lady is smoking cigars at 105 years old because she's stress-free. Willie Nelson is looking sharp for his age because he's low-stress. If it helps reduce your personal stress, perhaps...PERHAPS, it's a good thing.
Willie Nelson is pretty sharp for his age. I compare him to the much younger President of the United States who blathers absolute nonsense constantly despite no known history of cannabis use and a claimed history of abstaining from all substances.