I think that our society today is lacking. We are a throw away world, where people need instant gratification, There is no stick-to-it attitude. If it's too hard or not all about them, its time to move on.
Back in the day of our parents, or even when I was married a hundred years ago, your word was your bond, a handshake sealed a deal, you meant what you said and said what you meant. And if you took a vow, you kept it. You never gave up, it wasnt an option.
My mother was an alcoholic who made my father's life hell. When I was older, I would say to him, why do you stay here, how do you stand it? He said, I promised and I love her, its that simple.