In order to do that we're going to have to find a way to get rid of no-fault laws to stop the ever growing number of divorces. As a married person in Texas I cannot defend my marriage against the intrusion by at 3rd party, adultery is legal and while Texas is one of only two remaining states where you can still demand a jury trial in a divorce, they always get you on the living apart statutes. As long a the state encourages people to treat their vows as though they mean nothing, they will continue to do so.
No-fault divorce laws are unconstitutional by their very application because the person being sued is denied due process and equal protection under the law. The state put its considerable force behind the person filing even if they are guilty. They most often can't file under "grounds" because they're usually the one committing the offense (i.e. adultery). We've got to end no-fault to protect exisiting marriages.
Would you exclude childless marriages from that mandate "to end no-fault"? If you wouldn't, then would you expect to see people who have no intention of producing offspring from a relationship just resort to living together without ever getting legally married? What would that do to the institution of marriage? How do you go after the folks living together?