Another reason would be selection. What if they can’t find the music they want and listen to it for free? Putting all legal issues aside, who could doubt that major P2P networks are not the best resource for finding music currently available to music downloaders all around the world? Even when you exclude the poisoned files put there by the entertainment industry, the numbers of MP3's are in the millions. It seems unlikely that any service like Napster or Real's Rhapsody will ever offer a free service for students that also permits them to burn the music onto CDs or store them on portable devices.
In the past, the Recording Industry Association of America (RIAA) has directly targeted university students in it's lawsuits. The organisation believes that it's an educational tool for the students.
Source:
Yahoo