The forefathers of this civilisation were very intelligent and they believed that in order for there to be no rivalry and other undesirable traits, there must not be any competition for sexual reproduction. So, they created a reproduction machine, where they cultivate new people, using the atoms that they feed into the machine. At appropriate times, such as when one of the people die, they will wake up one of the dormant beings in that machine to take over the vacancy.

They teach only the good words, thoughts and habits and all the men really did grow up and remain very good-natured. They led a very simple life, a little like the medieval England kind of setting. They also insist on living without any change, but in case life gets a little boring after some time, at regular intervals, they have a "No Rules Night", where they can dress up as animals and party. Of course, even the supposed partying was very mild, just dancing, lots of laughter and hugging.

However, when this group of explorers came to the planet, it was considered change. Especially because there was a female robot on board who was eager for her first sexual experience. As the men on this planet have never seen a woman before, they got very excited and erm, aroused. In the end, when one of the elders couldn't chase them away and thus prevent the commoners getting exposed to sex, he believed that this was the end of the utopia civilisation and he had failed his forefathers. So, he engineered the destruction of the whole planet, where the first sunrise will cause everybody to split into atoms.

I think this is a pretty interesting idea, that Utopia can exist only without sex. Hmm.... but why only males? Why not all females?