I'm surprised that your primary care, or psychologist didn't take you off the meds after the first 20 lbs of weight gain? That sounds like a horrible experience...

My limited understanding of psych meds is that they're hit or miss, and that you may end up trying a few until you find one that "works". Side effects like weight gain, and not giving a shit about the ramifications of negative behavior, would certainly strike me as the kind of things that would warrant a reconsideration of a prescribed medication?

So I guess it begs the question, what was the role of your doctor in all of this?