It is interesting, to be able to attack the computers which are shown to be attacking you. If I was a home user with the capabilities of launching such attacks, I would do it, no questions asked. For now, it's either kill or be killed. My ISP wouldn't like it, but I could just find another one...

If I were administering a network of a large corporation (or even a small business), however, I would think twice before using my network's resources to put an enemy computer offline. In this people's court world, where lawyers reign supreme and everyone else pays them to, a lawsuit against my corporation would mean no more job for me.