In 1 Corinthians 7, Paul discusses marriage. He says it is best not to marry, to be fully devoted to God. But marriage is no sin: “It is better to marry than to burn with passion.” I think the devaluation of marriage in our culture is not because there is a problem with the institution of marriage, but because there is a problem with the married. If done as the Bible recommends, marriage would be a lifegiving, empowering, fulfilling relationship (though never to the degree that a relationship with Chrst can be). Here are Scripture’s keys to successful marriage:

“The husband should fulfill his marital duty to his wife, and likewise the wife to her husband.” (1 Cor. 7:3) Seek to out-serve each other. And not as you want be served, but as the other desires.
“Do not deprive each other except by mutual concent and for a time, so that you may devote yourselves to prayer.” (1 Cor. 7:5) Sex is vital, but God must be at the center and above of the relationship.
“Wives, submit to your husbands as to the Lord. For the husband is hte head of hte wife as Christ is the head of the church.” (Eph. 5:22) Leadership is the marital role given to men by God. Don’t worry ladies; this works great if:
“Husbands, love your wives just as Christ loved the church and gave himself up for her.” (5:25) The husband’s love for his wife must sacrifice himself and place her needs before his own.
“Each one of you [men] must love his wife… and the wife must respect her husband.” (5:33) I think this plays to how most men and women are wired internally. A woman’s life question is usually, “Am I beautiful? Am I worth loving?” And a man’s: “Am I a man? Am I worth admiring?” A husband and wife must enthusiastically answer “Yes!” to each other’s central life question.

Lots of useful stuff here, including “Why did God allow polygamy in the Bible?”