- Yes, it's illegal. I don't think anyone actually argues it's not, but somehow it still keeps popping up as an argument to support that it's theft.
- Legally, as far as I know, theft and copyright infringement have very different meanings. I'm not a lawyer, but I'm willing to bet that neither are any of the people arguing piracy=theft. Anyway, I don't really see how arguing and personal opinions can come into this. The law is what it is.
- Morally, it's hard to argue that it's right, but at least this is the only part where you CAN actually have any kind of debate.
People arguing about different things without realizing it = recipe for endless, unproductive argument.