Way back when, polygamy was necessary for survival. When people got sick thousands of years ago, usually they just died. So people had to have more than one spouse with whom they could reproduce many more offspring then the majority does today, because it was likely that one or more of their children would die. Likewise, I guess it was necessary for girls, as well as guys to marry and reproduce earlier in life, due to a much shorter life span.
However, in today's world, we don't have the same problems that afflicted out ancestors. Not only do we live longer, healthier lives, but we know so much more about how human beings develop, both physically, mentally and emotionally. We know the type of damage sexual, emotional and physical assault/abuse causes in a child, or young adult, & just because somebody says it's the word of god, or whatever spin someone wants to put on it, does not make it right!!! It is immoral to willingly and freely inflict this kind of mental, physical and emotional anguish on anyone, but especially a child. It is immoral to use the name of god as an excuse for molestation.
I don't care if people have more than one wife or husband or whatever, but I care when this life style is forced on underage individuals who are cut off from help, from other ways of life and living, and finally, who are not given the choice of saying no! This is not only immoral, but it's what some of us law-abiding citizens call rape, and sexual assault, and child molestation and abuse! It's against the law, and it's against the law for a very good reason!
In some muslim traditions, in some countries, a blood relative of a person harmed/killed by someone, has the right to avenge that relative, and are obligated, by their religion, (as I understand it), to kill their relatives killer. If this was done in the name of religion in America, the avenging relative would be in prison for murder!!!
Why is this different?! I've heard comments from the parents' lawyers about the persecution of polygamists, and this and that, but that's bullshit! The courts are concerned with the welfare of these child brides, forced to marry and have sex with their 50 year old cousins. They aren't taking the adults into custody, and charging the parents with polygamy.
They are trying to figure out how to right the wrong done to these children, the wrong that would be seen very obviously as sexual abuse anywhere else in the country! This isn't a fight against polygamy! It's a fight for the freedom from abuse for these kids!