Again, you're generalizations are wrong. I've been married 10 years. Wife is stay at home, homeschooling mom (8 year old and 2 year old). I've spent many a Saturday morning (and all day Saturday) cleaning or doing housework. She simply can't keep up with it with her mom duties.
So you love your wife? She isn't planning to leave you and take the two kids? Isn't telling the neighbors how much she hates you? I still don't believe Brad would do that much housework on a Saturday morning without doing it to conceal some sort of evidence of Nancy's murder.