How did Dale carnegie die?

Once I was discussing about books with my friend Pratik and during the talk I suggested him to read books by Dale Carnegie. He replied quickly, “What!!!Books by Dale Carnegie? Never . There is no use in reading those books. How can Dale Carnegie teach people to stop worrying when he himself committed suicide!” I didn’t pay much attention to what Pratik told and carried on reading the book.
The next day when another friend of mine ,Gaurang visited my room and saw the book , even he suggested me that I should not read the book because Dale Carnegie had himself committed suicide!
Finally,
‘How did dale Carnegie die?’
This is what I searched at google! And as usual I found some interesting links where there were long debates on how Dale Carnegie died ? Half of the people had the opinion that ‘The official biography from Dale Carnegie & Associates, Inc. states that he died of Hodgkin's disease on November 1, 1955 . So, it’s a rumor that he committed suicide.’ On the other hand half of them had the opinion that ‘Since the biography is from ‘Dale Carnegie & Associates, Inc.’ ,they don’t believe it and still think that he committed suicide.’
How he died is still a mystery .But more than it, what mystifies me is ‘What are people going to gain by knowing how he died ?Why should I or anybody stop reading his books even if he would have committed suicide ?’
Millions of people have been benefited by reading his book, including me! It hardly affects me whether he died because of disease or he committed suicide. The logic is simple. If you find the book useful, read it ! If you don’t find it useful ,don’t !!!
Different people will have different opinions .Many people like Mahatma Gandhi and there are still many people who don’t !!! So, why to form opinion about anyone on the basis of what others think about him /her?
No one is perfect. In every person, there are qualities which you will like and also the qualities which you won’t !So, if you think you can learn something good from that person ,learn it .Why to worry about anything else?
-Nikhil Daga