Creationists and fundies are a bigger insult to God than any atheist will ever be.
I'm talking Young Earth bible literalists, rejection of evolution etc...
First to say the Earth is 6,000 years old, global flood etc... is just dishonest and wrong. They claim we should listen to God's word, but I say they are the ones that are ignoring God. Why do you think we have quarks, evolution etc?... So we can experience them. So we can further our knowledge and finally understand our universe. That all the possible outcomes of evolution are merely different experiences. Every different sub-atomic particle, every photon of energy serves it's purpose to construct and maintain our universe. We will not go to hell unless we reject evolution big bang etc. To reject science is to create our own personal hell but not experiencing the universe to it's full potiental.
To reject these ideas is a far greater insult to God than any atheist will ever be.