When you explain to me why a guy selling one tomato that once eaten can not be replicated and a digital good that once replicated loses none of it's quality are the same, I'll start talking about conscience.
ps. I'm not saying that people should not pay for digital content. But when there are farmers out there who sell their products under the same rules Sony Entertainment sells mp3's of songs written 20 years in digital format, sorry there's something utterly wrong with the system.