Johnno, sorry things are so bleak for you at present. I once asked the same question, is there hope for me, a doctor replied with 'oh yes, there always is hope, as long as you are still breathing'.
I dont know your circumstances, so I cannot give you advice, but I can tell you what I would probably do if I was in your situation. I would read Bernstein, Diabetes Revolution, this book has given encouragement to many, some people have been able to reverse or improve their diabetes related complications.
I would look for some kind of 'healing diet' = eat good home made meals using the freshest, natural ingredients I could find, think of your body as a luxury car, you would never put cheap petrol in there would you?
I would pamper myself, physically and mentally, eg yoga, meditation, soothing bath soaks by candle light, drink herbal teas, use aromatherapy, have a massage, country/beach walks, etc
I would try my level best to do something different, to make a new start if you like, I firmly believe that is is possible to get well again, its hard work, but worth the effort.
You posted your story here, I think everyone who reads it will be sending you positive thoughts.
I wish you all the best.