When the family runs smoothly then the duty of a husband or duty of a wife is not a matter to discuss.
But here we are discussing about those families where lives of women go worse for their husband or the in-laws.
What i saw in my friends case that the philosophy of a man is that "if he is given chance by a female why would he not take chances?'.
This is the reason we don't hear about cases of s*xual harassment by woman against man.
..Almost 99% men think moral is a thing to deal with women only.
If anybody brings forward the cases of domestic violence against man by women, then surely duties of wife will be discussed.