Hi Hoosier, well quite a recap! looks like you have been brutally honest with yourself.
I am so sorry life is looking bleak for you right now but please believe me when I say it will get better.
It sounds like you truly are better off without your husband. He is not a very nice person right now and maybe never was? We excuse so much when they are our spouse.
I think you were married later in life so you have a double edged sword really in that you know how to be / live alone and yet you have now known marriage and have a daughter,plus you are no longer young and sometimes we feel "better the devil you know" than face old age alone" forgive me if I am projecting my thoughts on to you. I shall be 60 next year and now been alone for nearly 8 years so I know those thoughts.
However most woman end up alone at some point given we tend to live longer.
Maybe alone is better than ending up as nursemaid to a person who has treated you so badly.
Sorry I am rambling, it is late but I wanted to offer my ear and shoulder.
It is hard right now and unfair and life just sucks but it will get better and please don't write yourself off, none of us know what life will throw at us.
You are a good kind and compassionate soul and maybe one day you will find love again.Richer and deeper than you have ever known.
For now just roll with the punches and protect yourself on every level that you can.
I pray the new Year will bring you joy and contentment and closure, plus some financial stability,all the things I wish for myself infact!
BTW don't hate yourself for saying you would consider giving h another chance, many of us would and it is never wrong to try to hold our familys together,just don't let that thought stop you from protecting your interests and making a start on a new life.
I am thinking of you often.