Child marriages are an indication of gender-based discrimination against girls and cultural norms that value girl less than boys.

In some countries, child marriage is the next step of womanhood, following menstruation.
In some cultures, girls and women are not seen as potential wage earners — they’re considered a financial burden to the family. In cultures where there is a dowry paid by the bride’s family, it may be beneficial to arrange an early marriage for a girl for a lower bride price