I think he smoked so much dope that he gave himself cancer. He died a horrible death.
Smoking dope has not been shown causitive for meyloma. Your dopey post suggests you are smoking something? Cmon admit it.
Marley’s cancer was treatable, but he didn’t have the melanoma on his toe removed because it went against his religious beliefs.
The story I have heard, is that he did become a Catholic on his deathbed, but I’m not sure if this is true or not.