There's always going to be tools who who say piracy is wrong to appease a herd and look good in front of others, but I doubt there are many like that in these forums. You're probably not going to get any answer saying piracy is ethical from people who create content that can be stolen. When it hits home people will rightly take a stand on the matter.
Morality is a very subjective thing, so the people who give reasons why they think piracy is okay, some of them in fact will truly believe they are morally right to experience all forms of art without paying them. Either not fully understanding what it causes, or believing all art should be free/shared/modified; not caring that doing so may stop said art from continuing. Artists need some way to make a living, or else the art can't happen, and using their art to make that living is their best case scenario to live a happy life.
Personally, my own morality prevents me from pirating anything, (I literally have a wall I hollowed out and use as one huge CD library for albums I bought before going completely digital, so I can stay a shut in, thank you Agoraphobia!) but that's partly because I want to in turn sell art I make in the future. If I didn't have that outlook, would I pirate things? I couldn't answer that, because I'd lose a big part of myself in the equation, but I'd like to think I'd still follow my own moral code, which predates my desire to make a living on my creations.
Bottom Line: Morality is subjective, making it a hard thing to debate. Doesn't make the debate any less fun, but I doubt you'll find someone on these forums who seriously thinks piracy is cool.