Being a published author myself, I can mostly agree with Marc Sparks about his answer to this question that he was asked at least 100 times before he finally answered it. He was asked after writing his book, They Can’t Eat You-My Unorthodox Path To Outrageous Success, “Why did you write a book?” His answer was short and simple. It is because of ego or money. That is true for the most part. However, I do think it can be both and not one OR the other. Writing a book will allow others to experience and learn about the life, work or story of the author, who is likely very notable for having accomplished something. Better yet, the author is someone who can tell a great story with many strange and compelling sub plots and an astounding main plot. What is so impressive about story tellers is their command and control of the entire effort. It is a mystery to many how these books are written.
For those who write money driven books, Marc Sparks says they suffer the most difficult task. He says that it is extremely difficult to sell many books. This I can say is the truth. I have noticed that the people who can sell their books and get on the New York Times Best Seller list are those who have radio talk shows, or are talking heads on news shows. They are also people who have had a well publicized misfortune that captivates a large audience who might buy the book, or someone who is very popular in iconic terms. Most books don’t sell. The ones that do are less than 1/10th of 1% of all books in publication.
Marc Sparks may be right about this as most well accomplished people are this way because of very strong ego driven desires. Big egos will need to make a big noise in the world and then let everyone know about what they have done by writing a book. The good news for these authors is that many people will want to read about their very interesting lives and the things that they know and what they have done.
Marc Sparks found writing difficult to endure as he had to complete this book he wrote in 3 years after 11 full drafts. He says he got through it after almost quitting by living by his virtue of always completing things that he starts. I admire his efforts and wish that I had a life of spiritual success to brag about as he does of his material life.
Source: Marc Sparks Blog