FIB, unfortunately people have a tendancy to only look at the cover rather than reading the book. This includes Judges who tend to get so judgmental instead of factual.
Your lawyer needs to show exactly what your income is and exactly what your current financial situation is. As far as the judge making a determination about your wifes mental well being, maybe your L should ask for a psyche eval.
One of the thoughts that keeps popping into my head, and understand that I am not in your shoes and only think about how I would want to deal with it, is that I would keep fighting. I would not negotiate for future earnings I would stick to my beliefs on what is best for you and your family. Sometimes judges lash out in hopes that the party they are lashing out at will get scared and settle/compromise and then the judge has a freed up docket and can get a round of golf in or go to a titty bar.
My point is this, Judges make personal assesments of people sometimes because it is the easy thing to do rather than having to actually work at finding the truth (which is what they are paid for by the way. Then when the person they target does not back down and sticks to their guns those same judges finally do their job.
Do not be to quick to back down simply because this judge is throwing some bullshit your way.