Its a shame that you've found this to be the case.....I think most women do appreciate the circumstances as your sister in law told you, most women do appreciate a man that takes care of his kids if they are in the home or not.....I also appreciate the comment another member made about women maybe not having confidence that you would be able to put time aside for them....personally if its just sex you are hoping for.....be open and honest about it then women will know what to expect, we like that just as much as a man does. Knowing where you stand is important to both sexes.