A lot of this is caused by the system in the world today. Free-mixing of men and women, women forced to work (by people, by circumstances, by their own selfish selves, etc) and unable to attend to children, illegitimate relations becoming normal, children born out of wedlock considered legal and normal, etc.
Human children are a full-time duty and requires years of service. As such, unless the mother is able to give the required attention and has the cooperation of the father, she won't be able to do so no matter how much she wants. In such conditions, many will see the children as a problem, a hindrance to their happiness and freedom, and will end up abandoning or neglecting or even hurting the child.
It's true that a woman needs a fulfilling life and would want to pursue her career and interests, but children and the married life do not have to become an obstruction to it. A woman can both see to her children's needs and pursue her career, provided she is pursuing her career for personal fulfillment and not because of financial necessity because whenever a woman becomes totally dependent on her career financially (that is, she doesn't have the support of the father), it becomes difficult for her to give the required attention to children and in majority of cases children become a problem and they suffer even if the woman doesn't consciously want them to. The only time that a woman isn't dependent on her job is when the father is financially responsible for her and the children. Of course there may be times when the father's wages will not be sufficient or the father becomes jobless, in which case the family does depend at least temporarily on the mother's job, but in those cases the mother has the support and help of the father, so the children don't suffer. But that is not the case when the father abandons the children. To give to the children, the mother has to get. If she doesn't have the father's love and support, the children will suffer not only lack of father's love but also because the mother will not be in the emotional condition to give the required love and care.
The system is messed up and it is the children who suffer. But unfortunately, feminism and women's rights movements want those things will have such a negative effect on children and society in the long run. Children who grow up abandoned, neglected, abused end up being delinquent. some become criminals. many are emotionally unstable.
We can give these children a hug or a gift to show that we care. Some can adopt them and give them a loving home.