I look at marriage like one might look at conception of life. The government should not define it regulate it or limit it but simply acknowledge it to protect it. No-fault divorce in my opinion is comparable to abortion. In both cases government stepped in and added 50 shades of gray to what should be black or white issues THEN premised upon the created gray areas began to define and regulate.
If any other area of law worked that badly it wouldn't even exist in the first place. Would anyone even bother signing a contract to buy a home, for example, if the guy who sold it to you could come back 15 years later and make you give it back to him? ROFL.