Before my wife and I were married we had some serious discussions about what marriage meant to each other.
I had an exceptional mother and father. They were married over 25 years before my father died.
They showed love to each other, even in front of us kids (ewwwwww), they argued, but never fought, they taught their kids that marriage was forever so be VERY careful who you marry.
My wife and I aren't as good as my parents were but we both believed, before we were married, that marriage is forever, till death do us part, etc.
It has carried us through some tough times to know that just because we were mad at each other didn't mean we didn't still love each other.
Many would disagree, and do disagree thats why so many kids grow up in single parent homes..