I can totally understand where you are coming from. I have 3 kids myself and the wife works full time. We are incredibly busy people. That does not help a marriage. You give all day. But your not giving to HIM. What I have seen and what Chrome was mentioning is that our wives LOOK for things to occupy their lives, and at the end of the day, they are so tired, they have nothing left for us, but this was their CHOICE!
I would let your husband know that you need help. He needs to help you take some stress out of your day. But I aslo doubt that this will help your marriage. Many of us HD guys DO this, and our wives still have no desire. We cook, we clean, we do things with the kids, we get involved in their activvites. We have talked about this on these boards a long time ago, we called it the Worlds best Dad, or Worlds best Husband strategy. We kind of determined that is really does not work. What happends is that our wives find even MORE to be busy about. No matter how much we help out, they STILL can not focus on the needs of us guys.
Maybe it has something to do with the fact that women want men that have a primary goal in life that is NOT our wives.