Feminism is considered immoral by those who support patriarchy, but why is that? In my latest book, "The Final Wave: Dismantling Patriarchy Through Freeing Feminism" I give the following answer to the question:
Because we are surrounded by patriarchy, our unconscious has a distinctly patriarchal bias, and we will always side with patriarchy without ever realizing it—unless something happens that causes us to re-evaluate.  You can call it an identity crisis or a (rude) awakening, but one day some of us find that our morality isn’t working for us anymore. Things that made sense yesterday, no longer makes sense; the old has become threatening and the new replaces the old as the norm. Sigmund Freud’s mentor Jean-Martin Charcot made this astute observation, “Why does the first statement of what seems a new fact always leave us cold? Because our minds have to take in something that deranges our original set of ideas, but we are all of us like that in this miserable world.” Because all of us tend to reject a new idea as threatening, and because patriarchy claims women are individuals who should serve men, and that women’s subserviency is a moral question that requires a moral answer, and feminism insists all people should have equal rights and that women’s legal personhood is a question that requires a rational response, we find that feminism isn’t rejected because it is rationally indefensible, but because it is emotionally reprehensible to people whose morality has been shaped by patriarchal ideals from childhood, especially because--
Morality is about getting others to agree with us.
Since morality is about conformity, we reject people and ideas that don’t conform to our worldview. Although we can’t change people’s opinions, there is no need to despair, for we can change the laws that govern our societies and support the patriarchal narrative; we can end the man’s
authority using legal means. This is why women’s legal personhood with all the rights and responsibilities thereof has been, and always will be, one of the aims of feminism, and until the day dawns when all women are recognized as persons with equal rights, instead of subservient individuals, we must learn to make waves.
 I must hasten to add here that having a bias is in itself not necessarily a bad thing as biases allow us to make quick decisions, but they hide also prejudices and the more we believe ourselves to be free from biases the more biased we become.
In other words, it is not wrong to make waves. We must make waves if we want to change the world and make it a safer and more welcoming place to women and children.
But how are waves made? They are created when opposing viewpoints come in contact with each other - complacency creates smooth waters for patriarchy to sail on. From a Christian perspective waves are needed to ensure that tradition doesn't stifle the work of the Spirit. We need to be open to new ideas if we don't want to become stones that the Spirit can no longer move.
It is while we contemplate these things that we find that our morality is like a fog that clouds visibility until everything looks the same, and good and evil become undiscernible.
Revelation clears the fog enough for us to find our way out if we diligently
seek it, but we must realize that revelation gets us only as far as our mind allows it.
Our eyes saw God as a distant shimmer on the surface of the waters.
Or was it just the setting sun?
It is important to note here that revelation can take many forms. It can be the astronomer gazing into the stars, or the philosopher looking for wisdom, or the theologian reading the words of the old prophets. Revelation is about that which transcends us and our world and as such it doesn’t come in any one form. It could be said that revelation is like the universe: it changes as we contemplate it. The one thing all revelation has in common is that its purpose is to help us re-evaluate the things we are familiar with, our world, and our place in it. Revelation challenges tradition, it doesn’t merely enforce it, and since reason dictates which traditions—if any—we ought to follow, an open mind is vitally necessary. We must use reason to find the truth, but since our morality tends to get in the way, we usually use our ability to reason to justify our previous beliefs instead of challenging them. Hence we must be careful not to assign too much importance to our ability to reason; we need to also listen to the unconscious, for it contains a rich heritage of tradition that is invaluable to our human experience. In other words, we need all three—reason, tradition, and revelation—for only when they work together do we get as close as humanly possible to the truth.
This is the purpose and reason for the existence of Christian feminism: to re-evaluate tradition using reason and revelation as our guides. Blind adherence to old ways is as useful as demanding people walk instead of using modern transportation just because that was how the apostles got around. Life is a dynamic experience, and our faith has to be just as dynamic. The alternative is a dying church that offers lies in the place of truth, and who wants to be part of such a church?