You might think that the court intervenes only when there is a nasty divorce conflict, or when a parent has some serious fault such as being a drug addict, but that is not true. No family is safe from a judge's personal decision. When the popularly elected San Francisco sheriff had an argument with his wife, the authorities decided to bust up his marriage. Neither husband nor wife complained, and both wondered why it was anybody's business. The city liberals all said that his family was everyone's business, so he was hit with a one-year restraining order preventing him from seeing his wife and child. He had to call on all his political friends to avoid losing his job.
Even if you are a libertarian who believes in writing your own marriage contract, the law makes it impossible to make a binding agreement for joint custody of your own children. Any such contract can be voided and replaced with the biased opinion of some judge.
Listen to the radio commentary here: