It was a little hard to read your story.
I know that I almost brought that to my familly. I used to drink a lot (read the extreme level of alcoholism where I was aware that I could not be saved anymore).
I am ten years sober now, living a fulfilled life. I am a happy man, and I do my best to help others to achieve the same.
I can feel your loss. I am deeply sorry for Robin, and I cannot just say that time will cure everything. You will suffer every day of your life.
Life must go on. With cats in it, if possible.