All Sexual intercourse Q&A

My wife has not wanted any sex for at least the past three years. She will not kiss, touch or feel. Any discussion of the subject brings a quick response such as, "That's all you ever think about."
For most of our years together, our love life was OK -- not great but OK. Now there just isn't any. We have had marriage counseling three times, but she refused to get personal counseling. She does get her yearly pap smear and mammogram, and there doesn't seem to be a physical problem -- she takes no medication at all, has never had any surgery, and she is usually lubricated easily. But she refuses to talk about this with a doctor. My libido is still good, but I am reduced to masturbation, which is not fulfilling. Yesterday she asked me that if I was so unhappy, why I didn't get a divorce. This could break us up. Any ideas?