Kent, who has been with the newspaper since DC Comics debuted the character in 1940, quits in front of the entire newspaper staff after a heated discussion with Morgan Edge, the owner of the Daily Planet's parent company, reported Los Angeles Times.
Before he leaves, Kent gives a speech about how the true sense of journalism has given way to entertainment.
"This is really what happens when a 27-year-old guy is behind a desk and he has to take instruction from a larger conglomerate with concerns that aren't really his own," said writer Scott Lobdell.
"Superman is arguably the most powerful person on the planet, but how long can he sit at his desk with someone breathing down his neck and treating him like the least important person in the world?"
"This is not the first time in DC Comics history that Clark Kent has left the Planet, and this time the resignation reflects present-day issues