VS The Bad Guy
What happens when the good guy gets the bad guy in a vulnerable position? The good guy lets him go. But if it was the other way around? Not so. The bad guy would destroy the good guy. Wouldn't he? Would you rather be the good guy or the bad guy? Sometimes the good guy is too trusting and gets destroyed. However it boils down to a matter of principle. The good guy can only tell the truth while the bad guy does all he can to destroy the credibility of the good guy.