I love the way, how House MD works pretty well as a diagnostic tool on morality.
Because, it's entire premise is: What is the value of human life, when traded with asshole behavior. My answer is simple. He crossed the line, when he ruined a guy's life by lying to him about being a father.
But ironically enough, some lefties still claim, that the worst act House did was to: Be attracted to a young woman, and tell him the truth when he found out he was a guy.
Yes, these people seriously are angry, that House didn't lie.