It's remarkable to me that you should be so concerned with my perspective, if you believe me insane as you now claim. (What will it be next? That I have too much time on my hands? That's often next from here.)

Evidently you are concerned with my perspective, considering the effort you keep going to to continue to gain its benefit. I've explained why I think that is, and I'm not likely to change my mind at this point. You should really think about why it means so much to you to keep trying to negotiate otherwise.