[Dynam0]

1) It is wrong on some level, even for personal use.
2) The vast majority of internet users do this because of how easy it is.
3) It's difficult to enforce since virtually everyone with a computer would be infringing on copyright laws of some kind.
4) How much actual harm it does is difficult to project and this is why I think piracy will continue to go largely unchecked.
5) The 3d printer/table analogy is okay...but this "table" is intended to be copied and mass-produced anyways, only instead it's by a distributor that splits the profit with the industry who oversees production of the original. The artist obviously gets some profit as well. For something to be pirated in the first place, it's almost all of the time going to be something that has already made profitable gains and is a sought after item.
6) Given that piracy is evolving too quickly to be enforced properly, people who get themselves into the media industry need to make intelligent decisions on how they release their material. Just like people have adapted ways of pirating copies, artists need to adapt to new ways of pitching their products in the smartest commercial avenue possible.