IS PIRACY GOOD OR BAD?

Piracy is the unauthorized use or reproduction of another persons work, so an example for that would be downloading music,movies or books and calling it your own. I don't think that piracy is bad because what would people watch, what would they listen too, oh my god. WHAT WOULD THEY READ?? I know a couple people who download music and what not, I am one of those people. Hmmm now in all honesty is it good or is it bad? Because this is just what i think, many people have their own opinions. whats yours?