No marriage is better than a bad marriage.

When the parents' relationship is happy, healthy, and supportive it's fantastic for the kids. My parents' relationship is like that. They've had their bumps and issues, but for the most part they are great together. It was a great environment to grow up in.

But if the parents are unhappy or have a toxic relationship it is so damaging to both the parents and the kids. In a situation like that everyone involved, including the kids, is better off with divorce. My sister was in a bad marriage. It was so damaging to her kids. The divorce process was messy and hurtful, but once the dust settled the kids thrived much better than they did when their parents were still married. Never stay in a marriage for the kids.