I used to think I thought that way, but then I had some opportunities to casually steal from people I didn't know (and easily get away with it), but I didn't. With that said, I pirate things all the time despite believing that doing so frequently harms the content owners a little.
I have taken that precise action against someone who mildly annoyed me. I remember it (and the perceived slight that motivated it), but feel no guilt over it.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.