Very religious people might find this offensive, because Ursula K. Leguinn's "The Ones who Walk Away from Omelas" is a mockery of Christianity. The child in this story is viewed as a Christ like figure. The happiness of all the people of Omelas depends on its suffering. Though the happiness of the city is great. Omelas is referred to as the happiest city. It is in itself a heaven. Their lives are filled with "comfort, luxury, exuberance" if it pleases you. The point of the story is that there is a price for their happiness.
The city of Omelas is almost inexpressible, although Leguinn did a wonderful job. It starts out with the "Festival of Summer" where all the people meet and participate in a celebration. There is music, horses, decorations, and naked children running and playing, while they all make their way up to Green Fields for a race.
Leguinn goes on to tell us of their culture. How they are not like any civilization today. There is no need for war or even police for that matter. For the few laws they did perhaps have, there was never any need to punish anyone. Not to say that they are like the Utopians, because they are by no means ignorant. "They were mature, intelligent, passionate adults whose lives were not wretched". Our society today agrees that " only pain is intellectual, only evil interesting". Every person has his or her own interpretation of what true happiness entails. If in your life, you see technology ("central heating, subway trains, washing machines") as a necessity for happiness, then the city of Omelas has all that. If those things are not important, then believe that the people of Omelas live more simply. Either way, their city is the perfect city.
What city lives without sin? Certainly, Omelas does not. "I fear that Omelas strikes some of you as goody-goody. If so, please add an orgy. If an orgy would help, don't hesitate...