Do you think parents should stay together "for the kids"?

I think most people would agree that divorce is not good for kids, and research by psychologists supports this. But I am sure divorce is not a decision made lightly, and people who choose to get divorced are really suffering, and that seems like an awful way to go through life.

Of course in cases of abuse or neglect there is no argument to be had. I am referring to a case where one or both spouses are profoundly unhappy and would be happier if the marriage ended, but the marriage staying intact is probably better for the children.

Should parents put the needs of their children above their own in this case?