God's plans for humankind within history required marriage. Not just the dominion clause, breeding and bossing can be accomplished without covenants, but child rearing cannot. Fathers and mothers working together is required. I think that is why the divorce epidemic is having such detrimental affects on our broader society--children cannot be raised according to design by single mothers and in broken homes. Sure, there are exceptions, but it's hard to miss the overall trend. Our fly-by-the-seat-of-our-pants, make-it-up-as-we-go approach to love, marriage and family is a dismal failure.
So, within this space called history, from the fall in the garden to the dead seed of man rising from the dust to face God's judgment, marriage has divine and practical benefit. He who finds a wife, or vice-versa for that matter, finds a good thing; something not to be discarded even after the kids have grown and gone. How hard can it be to see that spouse as the gift from God he or she truly is?
Marriage is not a human invention, nor a societal convention that can be tossed aside or experimented with. Oh, we can continue to break marriages upon the rocks of hedonism, but that only delivers the next generation into the cold, dark, stormy deep. When it comes to marriage and family, there's God's way or there's a slow descent into the night!