As a possible depiction of a MAD world, one could look at the Japanese science-fiction novel From the New World (Shinsekai Yori 新世界より), in which human beings have developed supernatural powers.

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   To prevent humans from killing one another, they have genetically engineered themselves with a mechanism called *Death Feedback* (kishi kikou 愧死機構). This makes humans psychologically and physiologically incapable of killing other humans. They have also developed a biological mechanism that makes them sexually attached to one another, especially when under extreme stress, much like bonobos.

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The novel is currently available only in Chinese translation, but you can also watch the anime adaptation under the same name.