I think you forget the fact that his son has 0 ability for self-preservance. In some cases, we may make things that have no chance to exist on their own, persist, but in this case, what does it serve, but our own selfishness?
It's my sincere belief, if you think differently then we can agree to disagree. For myself, I've never done a selfless act. All my so-called selfless compassion has ultimately been selfishly motivated. Therefore I can't judge the father for keeping his son alive.
What a strange thing to say. Come on, you must have done at least something small as a selfless act. At least something does has not inconvenienced you very much. We do this all the time and not just to feel better about ourselves.