So sorry you are feeling so much pain. It takes so much out of us to be in chronic pain all the time both physically and mentally. I know that the thoughts of having another surgery is a PITA but if there is even a remote possibility that you would be painfree then you should really consider this surgery.
I have had constant pain from stent insertion since basically all but 3 weeks from June 29 of last year and if someone told me I had even an option, I would jump at it in a second because I too have NO LIFE. There isn't a thing I can do that doesn't cause pain and the more active I am the worse the pain is and I'm talking about just taking a shower, so going out and doing things with family and friends doesn't even happen and my body is in the worse shape it has ever been.
So, please, if you have an option, try it. You just may get some relief and may finally be able to live your life. I will keep you in my prayers and hope that this works for you!