Economic Utopia?

Sach's does a great job of laying out the possibilities that are within our grasp to eradicate poverty and to make the world a better place. Reading about his ideas are inspiring, but I wonder if it's easier said then done. Near the beginning of the book, Sach's talks about how everybody used to be poor. On page 26, he says China, India, Europe, and Japan all had similar income levels at the time of European discoveries of the sea routes to Asia, Africa, and the Americas. Marco Polo marveled at the sumptuous wonders of China, not at its poverty. Cortes and his conquistadores expressed astonishment at the riches of Tenochtitlan...the early Portuguese explorers were impressed with the well-ordered towns of West Africa." The question I want to pose is--will we ever reach an economic utopia? Is there ever going to be an ending point--or a place where (economically) we will all be satisfied?