It is better to not believe a truth than to believe a lie, because this defines yourself too. If you believe a lie that has negative effects, it shows you may have malicious intentions. But if you don't believe a truth that has negative effects, then you may be well-disposed.
Without the conscientious actions of you, o braveheart, the society ever lastingly will be stuck in a loop filled with misery, hopelessness and destructive external advancement.