I suspect that in the final analysis our children are our harshest critics. It's easy to look at the way a person behaved at a point in time and think "I would never have done that". But of course, we were never that person in that situation, and none of us have the slightest idea what that felt like or more importantly, what the options might have been. Before you judge a man, walk a mile in his shoes, and as is very clear from the film, his shoes were not easy to walk in, metaphorically or otherwise