I don't believe that someone can give you warranty in anything. I'm not religious and I think something has value for people if other people or you put work in it. 
if your husband/wife gave you vow some years ago and now he/she wants divorce, who can enforce this vow? government?
a person can divorce simply because it's physically possible and vows are just a mental construct.
it somehow reminds me of "intrinsic" value of gold. 

 Let your yes be yes and your no be no.

Marriage vows are public, to increase the social cost of breaking them and the social reward of keeping them. That is why wedding anniversaries are celebrated and "round" anniversaries are celebrated even bigger. Everyone knows that it's an accomplishment.

An increasingly rare accomplishment, in fact.