I dont see too many artist on the street, homeless and starving. You see, I never used it, but there is something inherently human about just having to have something, regardless of use. I believe in upholding copyright laws, but I don't think that stopping the file sharing is the only answer. I believe that enough people want the Napster service that they ARE willing to pay for it. Granted e-mail isn't breaking any laws, it is a useful service.
People are willing to pay for useful services.
People can also sample songs they havnt heard and listen to those. But an artist should recieve money for what belongs to them. Like metioned before, Napster may even HELP artists sell CDs. If you like the song you downloaded, you may want the CD for the car or something. I dont think its stealing at all.