Alone and confused 

I have never felt more alone in my life. My husband of 2+ years walked out on me 6 weeks ago. He left me with our new home, our dog... he left with just the clothes on his back. If he knew how to communicate with me, maybe I would know why he left. The last few months he distanced himself from me to the point where we were barely speaking, and when I brought up the marriage he would completely ignore me. My once wonderful husband became arrogant and sarcastic at the drop of a hat. I've determined that he must be going through a midlife crises..but at the age of 32??  This would not be half as difficult for me if we had had problems to begin with, because then in my own mind I could justify him leaving. It's like he just woke up one day and snapped. He won't even consider marriage counseling. How can someone cut their spouse off emotionally so quickly? How can you not be willing to at least give a 2 year marriage a fair chance by trying therapy and THEN deciding if it is salvagable or not? He is not coming back. He told me that we are both still young enough to start over...the man I thought I would have children with and grow old with. He has told me I need to get used to being alone. I'm beginning to accept it I think.. the shock is wearing off and now i just feel stuck (for lack of a better word.) The only thing that keeps me going is my work and my dog. I'm not even able to have hope..it dwindles away with every nasty comment he says to me. And of course everywhere I go I see couples..and couples with children...and they all seem so happy... I can't speak to anyone about my separation.. for some reason I feel ashamed of my failed marriage. I feel so alone.