It's actually good to hear from someone who does DA, to find out more about why you do it, so thank you for the perspective on it. I simply never do it myself outside of my own head, but come to think of it, I do it inside my own head quite a lot. I think that's why, when someone DA's me (oh fie, I used an acronym as a verb), it's doubling up on my own internal efforts toward circumspect thinking, which often feels like too-much-too-soon when it happens in face to face debate.