Staying together just for the children

Do you think it’s the right choice to stay together with someone you no longer love or want to be with just so your child can have mom and dad together in the same household.

My best friend growing up parents hated each other the dad was always cheating on the mom and they fought all the time. She told me her parents made a agreement to stay together until all their kids graduated high school this way they grew up with mom and dad in the same house. My friend hated this and told me she wished they would just get a divorce because all they do is fight and she hated it.

I’ve seen many post where couple say they are staying together just for the children.

Is this really the best choice? kids and especially teenagers pick up on their parents unhappiness and in my friends case wished they would just not be together. Or if they are raised seeing a unhappy marriage will that effect them and they won’t know the difference from a healthy happy marriage to a unhappy one.

What’s your opinions on this?