No, his quality of life and mental state is severely impacted for years if not decades at a time and he slowly, and very painfully, dies.
My father said the exact same thing about smoking. What's the worst that can happen, I die? Oh no - the worst that can happen is you living far too long.
I intend not to die of chemotherapy. And no, I shall never regret being a prudent steward of taxpayer resources. Let's consider the collective good over an individual's selfish longevity.
What would Mr. Spock say about "The Good of the Many"?
We all shuffle off someday. What's the worst that can happen? He dies?