Neither Steve Jobs’ vegan lifestyle nor turning down surgery were the acts of an insane man. Rather both decisions demonstrate his rationality, genius, intuitiveness, and internal strength to stand up for what he knew to be right. The truth may now give family and friends some peace of mind. Also those who tied Jobs’ cancer to his vegan diet can now go back to healthy eating. Understanding and publicizing the cause of his cancer should also focus more attention on the serious harms caused by chemicals used in the electronic industries.

Consider the misfortune that happened to Steve Jobs, one of the wealthiest and most powerful men to have ever lived. A little cost-free, harmless, and honest counsel would have greatly improved the physical, mental, and emotional wellbeing of Jobs—especially during the last 8 years of his life, when he gave so much to us.

[Interesting stuff if only conjecture.]
Source: Dave Winer