XYZ, it's normal to feel the way you feel. Even if you decide to cut off a limb that has gotten gangrene (well, yes, I really had to reach for an analogy, but work with me) that only means you know that the limb is bad for you and you have no future with it. It doesn't mean you won't miss the way it was and regret not having it in the future. Throw in the feelings about your children's new life and the reality of the situation is unpleasant. You will adapt and it will hurt less, but it's a real loss. No one can tell you otherwise. Don't fight it. Adjust to it.