A psychological evaluation is a must to prove extreme cruelty. Your attorney should have told you so, if you want you can get it revaluated from an attorney who understands VAWA, and also check with other experienced members here. I think your situation is critical right now and you'll need to focus your energy on finding the right solution.
I'm pretty sure you can get through this and we can tell that you're going through extreme mental crisis, USCIS is NOT an authority on calling your abuse as not significant enough/ extreme cruelty if you're thinking of ending yourself. Fight it till you die man, direct all that negative energy towards your goal of proving them wrong, we cannot let USCIS support abusive citizen spouses this way and get away with this partiality & abuse of law.
Feel free to share and keep us posted about your next steps.