Halfway through the article I started re-evaluating whether I still want kids. Not sure I could carry that burden. [] Though that is probably more on a logical level than feeling the raw emotion that a parent would - which is probably what you were getting at.
More accurately I know I could out of necessity carry that burden. Its everything else in life which would be more difficult. Kinda like a warrior without family at home has the luxury of adopting a devil-may-care attitude to combat - once others depend on him that isn't possible anymore.