The Elliot Spitzers and the wives that stand by them

So I'm sitting here wondering why women continue to stand by their man when they have repeatedly sinned against them and their vows. Why do women like Spitzer's wife or someone like the presumed President Hillary Rodham Clinton do this? Is it the power? Is it the insecurity? Is it the children? Is it the love the wife has?

My wife and I are still newlyweds, but I can't imagine her sticking by me if I were to do something like this. So why do they stand by their man? I've asked a lot of questions. Unfortunately, I have no answers.