I will put some of my opinion into this blog so you know what i think First the pros in a utopia there would be no money no hunger no war and no pain. this is not necessarily a good thing with no pain or indecent there would be no story and therefor no need for books or TV. Also there would need to be very strict laws to prevent violence and crimes. Now for some of my research so you would need people to farm and grow food but what if the city needs 100 farmers and only 70 people want to be farmers you could force people to work but that would not be a perfect city. you could use bribery like paying them but then other people would have get paid then defeating the point of having no pore people.