And why are people so concerned about what other people can and cannot do?
If a 15 year old wants to get an early start on ruining her life then by all means, let her. 15 y/os can marry but not those damn gay people, that would be horrible.
Someone has to keep the divorce lawyers in business.
Mexican 15 y/o teens here get pregnant all the time. Now they can get married, and force the father to take care of the kid. Usually he bails and the girl and her family is stuck raising the kid.