"The DiVinci Code" makes people comfortable in their unbelief. 20 million books sold, worldwide. There are a lot of people who will believe anything to avoid having to be held accountable to the living God.
I would just love for anyone who buys into the DaVinci code to read about gnostics cults. Far from the libertine lifestyle that the DaVinci implicitly endorses, the gnostics who used the Gospel of Thomas were ultra-ascetics who refrained from sex altogether, and were pagan in ways that neo-pagans and New Agers would blanche at.
AMEN