Relationships.

If there's no argument, it ain't a relationship.

Why do we need an argument in a relationship? Well it's fairly simple. Because we are humans and humans will always have issues. If these issues are not taken care or shared, it will simply destroy us from the inside. When that happens, nothing good ever comes out of it.

By engaging in a simple argument, one will be able to understand what has been bothering the person so far. And from then on, even if it may not be pretty, solutions will come out of it.

Which is why it is good to let the bad things out of the relationship. You don't keep it in and let in linger until it explodes. A happy relationship begins with a good argument.