I'm happy you brought up this topic.
This is indeed a very serious matter. I've been through a divorce, when my ex wife left me after almost 9 years of marriage. It causes pain and for the children it leaves strong emotional marks. Now I'm happy remarried.
Marriage is an institution that God gave to us. Basically when God created us, it was his intent for man and wife to be 1 flesh and to be a family.
Jesus restated this when saying that even looking (with lust) to another woman is already fornication in the heart.
Matthew 5:28 -
28But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart
Matthew 5:32 -
32But I tell you that anyone who divorces his wife, except for sexual immorality, makes her the victim of adultery, and anyone who marries a divorced woman commits adultery.
So both God a Jesus basically showed the viewpoint on the matter.
Since God is the Creator he knows what is best for us humans.
Fornication causes pain, emotional stress, uncertainty, children get in difficult situations.
The idea of evolution has had a big influence on today's world's view on marriage. If we are merely a part of evolution, we need to spread out genes, as animals do. Trying to survive.
This goes against the belief in a loving God.
As you rightly concluded, monogamy is the best way to live your life and be protected from a lot of misery.
Thanks again for your positive message on the matter
Yeah, unfortunate times where people reap what they sow. Thank you for sharing and for the encouragement.