The wickeds' devotion to their worldview mirrors the intensity of devotion the Bible tells us we should have for God. In the perfect sense, that devotion to God keeps the faithful from being wicked. In the imperfect sense, the devotion to their worldview keeps the wicked from accepting God and requires they do everything in their power to reject the Truth.
The rejection of Truth allows the wicked to reject good and embrace evil, even if they stand to lose their head in the process. It even allows them to reject the notion they themselves are wicked, for there is no God to judge them. No price is too high to pay to prove there is no Christian God.