Why do Protestants view marriage as sacred?

I thought the Bible makes it pretty obvious.
Hebrews 13:4:
Let marriage be held in honor among all, and let the marriage bed be undefiled, for God will judge the sexually immoral and adulterous.
Ephesians 5:22:
Wives, submit to your own husbands, as to the Lord. For the husband is the head of the wife even as Christ is the head of the church, his body, and is himself its Savior. Now as the church submits to Christ, so also wives should submit in everything to their husbands. Husbands, love your wives, as Christ loved the church and gave himself up for her, that he might sanctify her, having cleansed her by the washing of water with the word
Also, we do not all think that divorce is okay. If a couple wants to divorce what can that denomination, church, pastor, whatever do? Just because a couple gets a divorce does not mean that whatever faith they are practicing condones it. We cannot force two people to stay married because we do not agree with it. Divorce is everywhere. My church does not think divorce is okay and normal. Actually, my pastor refuses to marry someone who has been previously divorced.
I am a strong believer in this verse and I do not believe in divorce…and hey, I am Protestant!
‘Therefore a man shall leave his father and his mother and hold fast to his wife, and the two shall become one flesh’? So they are no longer two but one flesh. What therefore God has joined together, let not man separate.”