The emergence of Artificial General Intelligence marks a profound turning point in the technological evolution of humankind. Unlike narrow artificial intelligence systems that perform specialized tasks, AGI embodies the capacity to learn, reason, and adapt across a wide spectrum of domains comparable to human cognitive ability. The idea of developing machines with human-like general intelligence has long been a subject of speculation, but recent advances in machine learning, large-scale neural architectures, and multimodal models are bringing this once-distant possibility into the realm of tangible reality. The implications of AGI extend far beyond computational innovation; they influence every sphere of human existence including economy, ethics, politics, environment, and human identity. This research paper explores the multidimensional relationship between humanity and AGI by examining philosophical, scientific, and sociological perspectives on how intelligent systems capable of self-improvement could reshape civilization. The study aims to understand the balance between human creativity and machine autonomy, the risk of value misalignment, and the opportunities for collaborative intelligence that could transcend biological limitations. It evaluates how AGI could redefine employment, education, healthcare, social structures, and governance models while posing challenges of control, accountability, and moral responsibility. By employing an analytical and interpretive framework, this research aims to identify both the promises and perils of AGI to outline a roadmap toward coexistence rather than competition. The future of humanity in the age of AGI, therefore, will depend on how societies navigate technological empowerment with ethical restraint, ensuring that intelligence augmentation serves collective welfare and not existential domination