That's good at least. IMO it's good for a child to have both parents involved, even if they can't stand each other any more.

Sure- but families have done OK with Dad away for years (or never being seen again) off fighting Hitler or whatever, for generations, without the kids becoming criminals- quite the opposite in fact. Actually there's some evidence now that if dad is going to leave the family home it's better if he goes away and just visits occasionally rather than taking part in the complex joint custody arrangements favored by Courts for middle class families. On that basis, the families of whom JH complains should be doing better than the middle class kids participating in complex sharing arrangements. Which just goes to show that human beings are terribly illogical. ;-)