I'm sure you forgot the sarcasm tag...?
Not necessarily. I've heard women say they would ditch their husbands in a second in favor of their children.
Personally, I don't consider my husband disposable.
I've seen a number of Christian essays which say that, Biblically, a spouse's primary responsibility and loyalty is to the other spouse.
Would we women die for our husbands, as well as our children...?