...implying that the Keynesians are really empathetic and that the Chicago school folks are cold-hearted technocrats.

That kind of emotionality is what keeps people from making reasonable decisions on economic policy. It would be nice if the kind of naive Keynesianism that politicians love to apply actually worked. It would be nice if you could spend yourself out of a recession. Unfortunately, politicians only like the spending part of the equation, not the savings part.

It's important to note that the Chicago school does build on Keynesian insights. It's an attempt at improving upon its failures.