For one, he took a shot at me and being someone I don't particularly care for, I retaliated--it's as simple as that. Furthermore, I don't necessarily see the usage of ad hominem arguments as a "step down"--I can both insult and make whatever argument I choose to at the same time. I don't know why people act as if that's such a difficult thing to do. In an e-brawl, I'm liable to say all kinds of untoward shit for the sake of the battle > 1D Fi and 2D Fe. I understand that others might find it difficult to say the types of things I do, but that's what makes us different. For those who deal with me in a respectful manner, I usually return that, easily. For those who don't, they get what they get.