I read Dominic Lawson's article this morning and thought it was very sensible and in some cases pretty obvious.
What struck me was the fact that class and income are less of a factor than someone not being biologically related to the kids.
Makes sense - Arthur's mum was privately educated wasn't she?
And a middle class friend (one of the most sensible women I knew) divorced a couple of years ago and immediately jumped into a new relationship and was talking about having another baby etc before her divorce papers had even come through. It was a rollercoaster on/off relationship and she was just obsessed with that, could only talk about that all the time. And when they were 'off' she was going on dates with random men from OLD.
I was just flabbergasted by her selfishness. Yes, of course she has the right to live her life etc etc but also she had small children whose lives were being torn apart by their parents' divorce (plus other traumatic stuff going on at the time) and instead of focusing on them and being there for them she was suddenly acting like a hormonal teenager.
I thought, if it can happen to my sensible friend (who, in fairness, has never actually neglected her kids or been a bad parent to them) then I can only imagine what single parents who are less responsible bring into their kids' lives.