Laws like these often have a flaw in them insofar as they generalize victims and perpetrators into groups - in this case women are the victims and it appears men the perpetrators and their rationale, I presume, is such classification is based on statistics, magnitude of the crime, history etc. But that's not to say such laws are not necessary, because even though they may be imperfect, they lay the legal framework for people to stand up against injustice. My own take on laws like this, including those related to women, children, minorities is there is always the underlying assumption that good people who happen to belong to the perpetrating class are often already empowered politically, socially and economically to deal with kinds of injustices that these types of laws seek to address should such injustices be commited on them. That said, if women empowerment comes to a point where it produces violent and abusive women on the same scale that we have violent and abusive men, which I hope never happens, then I am sure a law like this can be used as a precedent to pass another law that hands out punishment to women. Also, if you are not a wife abuser, why worry about such a law?