Why do Bollywood actors leave for Hollywood to do insignificant roles?   

Basically because if she moves to Hollywood from bollywood, and only gets small roles, she will be getting paid better than she could ever make in bollywood studios. Bollywood is infamous for underpaying its female lead actors. They get more lines, work three times as long, but don't even get half what a secondary male actor gets. how fair is that?

Yeah you are correct they want to make it too big. I think getting offers from hollywood is enough to make an actor ready for the film to do Because when actors themselves striving hard to make their way to hollywood for fame purpose than the characters they are offering. Nobody will stop them. And in one sense it is good we will get to see them acting in hollywood movies. Soon our industry turn into hollybolly..

Probably the same reason Egyptian actor Omar Al-Shareef went to Hollywood. Cause that's where the real money and fame is. International actors get famous all around the world except for one country: The United States. And they all exchange their international fame for American celebrity status because that's where all the top actors, directors and writers are in the Film Industry. And don't expect that to change anytime soon. Last thing I heard after the scandal on Celebrity Big Brother, Shilpa Shetty might get more offers from Hollywood.