"Generative AI - What & Why?" explains this intriguing field to techies and laypeople. This book will examine Generative AI's complex algorithms, many uses, and future ramifications. Beyond the intricacies and rhetoric, it asks: Why should we care? Once we go further, readers will see that Generative AI isn't simply another tech term- a tool, collaborator, and inspiration. Generative AI challenges our vision of creativity in art, music, literature, design, and invention. Instead of competing, people and robots will work together. Generative AI, like any robust technology, has drawbacks and ethical issues. The book will include expert perspectives, case studies, and thought experiments for a comprehensive understanding. This book will encourage thinking, discussion, and innovation among AI researchers, students, and technology enthusiasts alike.