OK, I can see that your worldview differs from mine, but I can't reconcile the last part of your first sentence ("... though it wouldn't be nice to do that") with the rest of your comment. If copyright -- by which I mean the right to copy, not necessarily any laws pertaining to that right -- did not exist, there would be no justification in saying it "wouldn't be nice" to ignore it. It's like: if I didn't like redheads, and I said I didn't want to see any out my window, but I acknowledged that there is and should be no law restricting them, then clearly I'm being unreasonable somewhere along the line.
You're misunderstanding the "it's not nice" part. For example, it's not
against the law to be (somewhat) rude, either - but it's not nice. As I
pointed out, the whole attribution thing is something that needs to be
addressed on a social level, not enforced by law.
And in general, I don't think it's an unreasonable world-view to dislike
something, but be against regulating it. For example, I'm vehemently against
right-wing ideology and fascism, but I still would not want laws restricting
nazis to voice their misguided opinions, because everybody is entitled to free
speech. That's not being unreasonable, that's being consistent.
