Why did the author of Sai Satcharitra feel it was necessary to write a new book about Sai Baba when others already existed?

In Chapter 2, the author acknowledges that several works about Sai Baba already existed, including those by Das Ganu, Amidas and Bhavani Metha, and a series called Sai Prabha. However, the justification for this new text is that Sai’s life is described as a 'vast ocean, an infinite mine of jewels.' The author humbly compares their effort to a small Titwi bird trying to empty the ocean, illustrating that no single book could ever completely capture Baba's deep and infinite life. Therefore, as explained in Chapter 2, the author believes one should find satisfaction in whatever can be told, as each collection of stories provides unique peace from worldly troubles and enthusiasm for devotees.