Marriage is so complicated.
I am married and happy because I believe in being married. I think that I want to live life with someone rather than on my own. I know that even when it gets bad, that in the long run it's a relationship I want.
My parents are also married because they believe in marriage. But they have both been miserable for the last 20 years. Because they can't figure out how to fix it, but also won't end it, most of their kids can't really have healthy relationships with them.
Based off of observing my parents, I can't believe that "saving" a marriage is always the right answer. I personally wish they'd give up.