This great video by Nina Paley will "re-educate" you in less than one minute.
If you want to understand more on this false idea called "Intellectual Property" and its dangers I recommend the following material
1) A short essay "The Fallacy of Intellectual Property" by Daniel Krawisz
2) The book "Against Intellectual Property" by Stephan Kinsella
3) The book "Against Intellectual Monopoly" by Michele Boldrin and David K. Levine