You would have to be an absolute moron to think smoking only kills you early. That’s not how it works.

Even if you don’t like the world around you today and aren’t enthusiastic about the future, the way smoking kills you makes your day to day worse until you eventually get a very painful day to day until you eventually give out and die. You are advocating slowly committing both expensive and painful suicide over a 30 year span because you don’t want to live for 40 more years.