Meh, I was told that it's not really a big deal. Like you said, so many people do it now that it's hard to catch everybody. With technology nowadays they can find you, but honestly, they're really going to be going after the ones that host the torrent/torrent sites. It also depends what you torrent, because if you're doing all the popular pop songs there is a bigger chance.
I was also told that even if you get caught the first time is just a slap on the wrist. Even that is rare, but just in case they say not to seed and be a little careful.