becuz Simon Cowell has been on American Idol for many years, plus he wasnt getting paid very well. So now he has his one TV show. I don't know that part of the story, srry. But that's what happened to Simon Cowell.
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i dont know. he probably did it cause he wanted to take a brake and he didn't really like the singers.
He left the audition section of the show as he would be busy with The X Factor US in America.
He returned for the live semi finals and the final.
Simon quit his american idol show to focus on his new show x factor.The X factor is a show in US it started in 2011 .So Simo joined this show that's why quit the Americon idol show.
Yes , Simon Cowell is quiting American Idol to start another show .
Simon Cowell was on American Idol from the beginning,He was on from 2002-2010.He judged for 9 seasons.
Simon Cowell has earned money in show business. He has also earned money by producing versions of American Idol throughout the world.
He is going to bring his show X-Factor to America and air it on FOX.
You have to be 15 years old to try out for American idol....