The claim that daughters cause divorce is not supported by evidence. In fact, research suggests that having a daughter may actually decrease the risk of divorce. A study published in the journal "Demography" found that couples who had daughters were less likely to divorce than couples who had only sons. The study's authors suggested that this may be because daughters tend to strengthen the bond between parents, while sons may sometimes cause conflict.

Of course, there are many factors that can contribute to divorce. Having a daughter is not a guarantee that a marriage will last. However, the evidence suggests that daughters are not the cause of divorce.