this sounds like a college interview question, but it is an interesting one nonetheless. why? why headphones? what makes you interested in headphones in the first place? i listen to headphone mainly because i want to be able to listen to music at work. the other reason is because a very good headphone system is much more affordable than a very good hi-fi system. a good pair of speakers alone will probably cost $10,000+ these days. and the final reason, is that they just sound so damn good.