Musicians that want to pay their rent, for one.
Good people who despise theft, no matter the size of the crime, for another.
Should we stop prosecuting shoplifting at the convienence store now?
Well you may have a point there, but copying a few songs for your personal use harms no other individual and the artist gets paid by the original transaction. As long as someone doesn't mass produce copies for distribution, I don't see what all the fuss is about.