And @darklajid: who says I'm here to change your mind? Perhaps it's really about pointing out how people who think like this are just being monumental pricks. Whether or not you're comfortable with that is up to you. But if you think you can be a prick and not get called on it, well, guess again.
One more thing: not paying is stealing. Copy all you want, that's not theft (making isn't taking, etc.) But just understand that the second you make a copy, you own the artist money. And if you decide to keep that money, you're holding onto something that is no longer yours. Which, as we all know, is explicitly wrong.
It's like bouncing a check. Sure, the money to back it will be in your account (i.e. your possession) for a few days after, but that doesn't mean it's your money, in that spending it on something else will land you in legal trouble if doing so causes the check to bounce. It's different in that the artist doesn't know you stole from them by keeping money to which you're not entitled, so it's not such a direct violation of trust. But it's still wrong. And since the artist has no moral obligation to make a transaction seamless, you can't put yourself back in the right by saying "well, I found that paying was harder than breathing, so that means the artists forfeits completely."
Sorry, but that's not how the law or ethics work. And I think you know it.