I don't pirate videogames or movies, sometimes I will pirate tv shows if I'm desperate to watch it. With music I'd been trying to avoid it, but I recently lost all my data and the 500 songs I bought from iTunes weren't backed up, and they told me I'd have to repurchase them all.
Personally I agree with what Nintendo do with VC and WiiWare when it comes to digital content-you pay for the right to use the content, not to download it a single time. I wish Apple would view things the same way.