Why don't I throw in the towel

I haven't thrown in the towel for a few reasons: I honor my marriage vows, I am a Catholic, I love my husband, he is sick with these addictions and in truth I miss being with him. It wasn't him who hit me, it was the evilness of the addictions and being a puppet for this woman. This woman who calls herself the daughter of satan. 
My husband was one of the most loving men I have ever met. He respected me, cared for me, was a good provider, loved me and I was the world to him. I know all of that is still within him, it is buried under these diseases that have him in their clutches. 
Before he went on facebook, he worked at a huge diner as a chef. He worked there for a few years, complained about the kitchen being to hot , but the money was good so he stayed. He stayed until he got involved with her. The bills were paid, we had money in the bank, we were able to go out on date nights, we just were together as husband and wife. I miss the man I fell in love with and married very much.