As soon as you abuse a person close to you this changes your relationship. They quickly start to see you as an abuser and will become distrustful or scared. This can change their behaviour around you and will wreck your relationship. If you value your relationship with them and your children this will leave you depressed and feeling out of control. This can lead to you becoming more abusive. It can also lead to suicidal thoughts.
As well as ruining your relationship, abusive behaviour puts you at risk of having children taken from you and makes it a real possibility that the police will become involved with your family.