Why did the speaker of the seafarer tell us his life and hardships?

The speaker of "The Seafarer" shares his life and hardships to convey the profound sense of isolation and struggle that comes with a life at sea. His experiences reflect a deeper existential quest for meaning and connection in a world marked by transience and suffering. By recounting his trials, he also highlights the resilience of the human spirit and the longing for spiritual fulfillment amidst physical and emotional challenges. Ultimately, his narrative serves as a meditation on the duality of life's joys and sorrows.