Healthy Arguing

In the article posted on Mr. King's blog, arguing is considered sometimes to be healthy for a relationship. While this may be true for some situations, like setting up personal boundaries between two people, it can be very destructive also. For example, say two friends are arguing about political views. What one friend says may offend the other to the point where the friendship is ended. This is a destructive effect because it was not only unhealthy for the relationship, it ended it. Therefore there is no longer a relationship for the argument to positively effect.