Why does the preface state that detailed, poetic Guru biographies suitable for Parayans are rare in Maharashtra?

The preface argues that while many devotees have written prose and poetic biographies of their Gurus, very few are detailed and comprehensive enough for dedicated devotional readings like Parayans and Saptahs. Chapter 0 points out that most existing works, like those by Mahipati, are collections that offer only brief sketches of each saint. It laments the scarcity of such works in Maharashtra and elevates two specific examples, the Guru Charitra and the Shri Sai Satcharita, as rare exceptions that fulfill this important spiritual need. Their rarity makes them especially precious for devotees seeking to perform this type of service.