Boys who grow up in violent homes are more likely to grow up to
be batters.

As with any other evil, wife abuse can be repented of and forgiven.
For her sake and for his , a battered wife should forgive her husband..

However, for her sake and her children's sake,
no victim of abuse should be expected to return to her abuser untill he see's his sin and shows repentence

by seeking professional help he needs so he will never repeat it.

Nothing she can do will change him.
Only he can choose to change,
and he must sincerely desire and determine to make that change before he will take the steps necesary to bring it about.

Why does he treat you this way ?. Because he chooses to.

None of us can help what we feel , but all of us can choose how we act upon our feelings.
Your partner could treat you differently if he wanted to.
And if he doesn't want to, then no matter how well you understand your partner,
you cannot change him. "