It happens because of…

Domestic abuse can sometimes be thought to be caused by many things.

These could include alcohol or drug misuse, unemployment, mental or physical health problems, stress, a lack of submission by a person, or having lived through abuse as a child.

This is incorrect.

Domestic abuse happens because an abusive person chooses to behave in a way that will enable them to have power and control over another person.

All other reasons that are given to cause domestic abuse are excuses and are used to justify abusive behaviour.