Do unfit parents have a right to procreate?

Courts today seem to hold the view that people have a right to procreate. As a result, wholly unfit parents can produce child after child. Even if the court removes the latest child from the home when very young, some abuse or neglect must have already occurred. In fact, the child might have health problems at birth due to drug abuse, alcohol consumption, or lack of proper medical care by the mother during pregnancy. Does the current system respect the rights of unfit parents at the expense of their kids? Instead, should unfit parents be required to adopt out any new children they bear? Should serial abusers be forced to take birth control or even sterilized?