Why do writers write about dystopian societies?

The term dystopia, Greek in origin, refers to a "bad
place". The term is antithetical to Utopia, which means an ideal place/state.The kind of
society as presented in dystopian literature is the society in a repressive and
controlled state, may be under the facade of being utopian as is found in books like
Huxley's Brave New World and Orwell's Nineteen
Eighty-Four. Writers of dystopian literature and makers of dystopian films
expose societies with different kinds of repressive control systems, various forms of
active and passive coercion. Dystopian societies are often imagined as police states
with unlimited power over the citizens. Kafka's Metamorphosis,
Koestler's Darkness at Noon, Golding's Lord of the Flies
are some of the distinguished examples of 20th century fiction having
pictures of dystopian societies, societies mechanically and rigorously controlled,
politically suppressed, severely dominated by hegemonistic rule. Fahrenheit
451, based on the novel of the same name by Ray Bradbury, is one of the many
dystopian films of serious reckoning. All dystopian literature/ films are intended as
critiques of utopia, an ideal state/place/society as imagined from time to time ever
since Plato's Republic, and its Renaissance counterpart, Thomas
More's Utopia.