I am very sorry for you Flygirl, you sound like a wonderful person and a great wife, you did so much for him and you still feel the guilt. Alcohol took his life and if he wasn't willing to help himself, the bottle was going to take his life sooner or later, in fact, in many aspects he was already dead
If it weren't for you he probably would have died a lot sooner, you were an angel in his life.
I hope you stay strong and grow from this, remember the good times you had, some people are meant to be in our lives for a short time but the sweet memory of them will last forever. I believe he was a good man at heart but alcohol changed his heart and soul. However, this same alcohol addiction made you a better person in a way, and it has been a painful learning experience for you. I hope you can talk to his friends and family members about this, that will help you.
Please hang in there flygirl, you have been so strong up to this point, and you will make it through this too, just give it time.
<3 Stacy