Do you ever fight in front of your kids?

I think sometimes it is inevitable to have fights in front of the children. I personally feel that minor squabbles are fine but if the argument were to escalate into a yelling contest, it is best not to do it in front of the little ones. Children are very sensitive to their parents' moods and could be upset when they sense that their parents are not happy. Growing up, I don't recall witnessing any major fights between my parents. They always seemed in sync with each other or are always able to reach a compromise easily.