I believe Omelas is the name of the community; not the people. Maybe they're Omelasians or something?

Leaving Omelas with the only option being that of the story, where one can live with the knowledge the child is suffering and/or suppress that knowledge (like knowing a specific, particular child in a ghetto today and not being able to help) within one's self, try to "forget" it and get on with one's good life or, leave and have full awareness of one's own and other's suffering and start to suffer (no suffering in Omelas, no depression or panic attacks, child abuse or rape, etc.) I would chose to leave because I want to be aware and I want to be responsible for myself. Not being responsible for myself means I don't take responsibility for my self esteem and talents either; can't enjoy my creativity and hard work (there would be no hard work in Omelas I'm thinking, because "hard" would be un-Utopian?) and achievements because they were "bought" by the suffering of the child in the horrid conditions.