Glenda, so very sorry you must live under a threat. I think I know why you continue. You care ! You think with something other than your emotions. However, I do think you alone would benefit from counseling, to help you deal with a controlling person.
On a personal note, you may want to turn the table on your wife. Tell her if you must live under a treat you will be leaving her. She how she likes that. I don't know your age or if you have small children, but if you do I am sure that must be considered before you do as I suggest.
I do have one thought and want to express my disappointment that the gg's here do not step in and give advise on how to deal with your situation.