There's a lot of truth to this.
I used to work with a woman whose husband was retiring--she was used to having her kids as a buffer, but they were now grown and had left the nest--and she said she was absolutely terrified of having to be at home with her husband all the time, because it's something they'd never done.
I worked with another woman whose husband had made the military his career and had been absent their entire marriage, but she said she knew when she married him, even at a young age, that this was how it was going to be. She pretty much raised their kids alone.
But now he was retiring and would be home all the time, and they were already going to counseling in order to learn how to live together as a couple, because it was something they'd never done.
My best friend is like this. She is a devout Christian and married a man who has wanted nothing to do with Christ. They have been married for 11 years now. They have been through a series of very serious ups and downs, including him having multiple affairs. She prays for his salvation, but despite this, he wants nothing to do with Jesus. They fight (argue) very often. Throughout all of this, they have 2 kids. When she first got pregnant with her first child, I remember her telling me very clearly that she was happy she was pregnant b/c this would save her marriage. She is miserable. In the midst of their dysfunction they have dragged 2 innocent, precious children through their turmoil. I once asked her if she will stay with him indefinitely. She responded that she wants to leave but does not want her kids to grow up in a broken home. So, she is willing to stay until they get old enough to get into college...which, in general, will be 12-15 years from now.
When I think of her situation, I thank God every day that I am waiting for Him to send me the man for whom He has created me....even if it means I'm still waiting for him at the age of 36.
I will never willingly suffer like that, even for my children. I pray for my dear friend...I truly do.