/r/Piracy, what is your stance on copyright?

Obviously (by virtue of being in this subreddit) most of you are going to believe that copyright is far too long, far too broad, and should at least allow for non-commercial sharing of information between private individuals.

What are your other views on copyright? Should copyright exist for commercial sharing of information, and if so how long and how broad should it be? Or should there be no intellectual property whatsoever? What about other so-called "intellectual property" laws like patent and trademark?