House is an extraordinary person. He doesn't exist. Of course. But he's well... he's independent, brilliant and an actually kind person who wants to save lives. It's debatable but let's consider a fact he was a doctor and that means he wanted to save lives and heal people. Now I know the world doesn't work like that, that doctors only want to "save lives" and "gain satisifcation" from it but it does not mean every patient is ungrateful to see. There are certain people who teach valueable life lessons. Some doctors cannot forget them for rest of their lives. As an example, see this reddit post of a neurologist who posted his account of a patient who was suffering from ALS.