I fully agree, and have yet to hear a solid argument in support of music piracy. Expanding your musical tastes and/or free marketing for the band are typically two very weak arguments, with the latter always unsubstantiated. If I copy your product and disseminate it to those clearly interested in it, I've definitely taken away some of your potential profits. You can argue that there are those whose interest didn't really compel them to purchase the product in the first place, so you're getting free marketing there in the hopes that they'll purchase future products, but let's be very realistic here, most pirates aren't spending more money on music because of their free access to music; they'll just occasionally donate to their favorite band. Of course, that's also a very unsubstantiated claim, but being human tells me that if I can get something for free with relative ease and little to no consequence, there's no reason to pay for it.