The modern definition of marriage, according to the Catholic Church, is for the good of the spouses and the procreation of children. The idea here is that a man and a woman fall in love, they get married, and they create children and raise them to become productive members of society.
Yet many people say: "No. Marriage is about love."
The truth is that marriage is more than love. The idea of “being with someone you love” case fits nicely on a greeting card, but it also contributes to the divorce culture, because the implicit message is that when you no longer love someone, the purpose of the marriage is over. Adults' feelings will trump all, as they too often do already.
If marriage were just about love, then any two (or more) people who loved one another could marry. There are some people who want to marry their dogs, cats or even pigs because they love them. If marriage is only about love, then that kind of leads down a slippery slope. It could become so watered down that there would be no point to marriage.
In the traditional sense, people married with the implicit vow that they would stay married and loyal to their spouses "until death do us part."
There are many examples of people who didn't necessarily love each other who stayed together because it was the right thing to do. One good example here is the wife of Benjamin Franklin. Lord knows Ben wasn't faithful to her, yet she stood by his side.
That's how people used to do it until the progressives came around and said, you know what, we don't have to be faithful anymore. We don't have to do things just because it's right. A perfect example of that is Bill Clinton. He just felt like getting a blowjob in the Oval office and he did just that. The heck with traditional American values. The heck with feeling guilt and taking responsibility for your actions.