Why did Andy Warhol do pop art?

Andy Warhol (Born Andrew Warhola) is famous because of his world known silkscreen artworks such as the Marilyn Diptych and the Campbell's soup can.

He is the father of pop art, creating it and said the famous quote "Everyone will be famous for 15 minutes" and "I want to be a machine".

He is also famous because of his movies like Sleep and Batman Dracula.