It's definately not right to hit anybody, especially your wife, no matterr what the reason is.
But I agree with you that the ladies have to think before you call 911, have to know what you are exactly doing there. Since after you make that call, both of you, I mean BOTH, have to face the consequence.
This kind of thing happens anytime, everywhere and in every kind of people. But most of the ones who was beaten didn't call police, why? We have to tolerate eachother, find a way to communicate when we have trouble, and live together. If you cann't do that, then get a divorce, and there is nothing wrong with that.
But don't do the thing like the lady downstair, sending her hu*****and to jail. She forgot something that her hu*****and is forever the father of her child, no matter what happens later. Nobody wants their child have a father with criminal record.