Not at all, people that download a DVD or 2 a day make the service more expensive for everyone else, but that's perfectly acceptible of course as DVDs are overpriced.
My original recommendation stands though, reduce number of connections on BT and wait for the email politely suggesting you start paying for movies again, I don't think the companies in question really care if you own 500 DVDs the ones you've 'self authored' are probably of more interest.
But anyway.... that's a different issue. IF you ever fall into strife feel free to send me your MAC / IP address, I'm sure your usage will make interesting reading.