Marriage is ordained of God

And again, verily I say unto you, that whoso forbiddeth to marry is not ordained of God, for marriage is ordained of God unto man.   

Doctrine & Covenants. Section 49:15

God ordains that marriage be a part of mortal life,
even though it sometimes leads to sorrow and to strife.
Nothing worth the having ever comes too easy, so
the state of matrimony sometimes makes a man feel low.
But those that stay the course and don't give up will find at last
that marriage trains the heart and soul to always be steadfast.