God forbid. If I am man, I will check myself if which part I am lacking. People were not plainly go into other relationship if she/he have a healthy relationship with each other. There are times that we think that we give all our best to our family because we worked hard, like 24/7 yet we didn't spend quality time them especially with your wife. Life is not all about work, it includes family, romance, spiritual, recreation, etc. So, if the wife cheated there must be a reason behind it.