Oh dear, not getting it are you. Having observed my friends children some of which are still together and some of them aren't, I can honestly say the children with the parents who are together are happier than the ones that aren't. In fact a good friend of mine only keeps their marriage together because when they split up for a while the little boy was very unhappy, despite how they feel about each other the happiness of their child is the priority. All very Victorian I know but it seems to be the case in my experience.