User blog comment:AokijiSencho/Theory on Chopper and Luffy/@comment-10543621-20140714052350

I think it's kind of a 'repeat' of sorts of the kind of life Roger would have led. It seems like Pirate Kings in general don't live long. They live an extremely fulfilling life, living out their dreams, going straight for their goal, and when they have it all, they die laughing.

For Luffy's personality, a long life really doesn't suit him to be honest.