One thing is that women perceive they have more viable options outside the marriage now. On the other hand, men reflecting after their divorce, often say to me they did not spend the effort and time necessary to maintain and nurture the relationship prior to separation. Maybe that they did not know how to do that, or they were reluctant or unwilling to seek outside assistance. Men are often uneasy participating in counselling. Seeking professional help is seen by many men to imply a lack of independence and control.
Men fear that seeking help can be interpreted as weakness and implies failure, which is threatening.
Here's some ideas to think about. In marriage, people struggle with balancing two basic life forces, the drive for individuality and the drive for togetherness. About maintaining one's own course without pulling away or losing oneself in another. Our ability to do this results from how well a person, our parents and grandparents succeeded in becoming well-developed individuals while remaining emotionally in contact with family. Others may provide support on occasions for our individuation, however that strength and energy must primarily come from within each of us.