Brilliant analysis, I must say.
As you pointed out, many people still practice child marriage even to this day, regardless of the policies made by the government.

I believe that lack of education contributes immensely to this issue. If you look at most regions when the people are not very educated, they tend to practice this.

I strongly believed that education will help reduce the rate of child marriages around the world. When people are enlighten about the risk involved, then we want to make better decisions.