The belief that there was nothing and nothing happened to nothing and then nothing magically exploded for no reason, creating everything and then a bunch of everything magically rearranged its self for no reason what so ever into self-replicating bits which then turn into dinosaurs.
Don't be a fool.
The fool hath said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that doeth good.
- Psalms 14:1 (KJV)
Atheists hate God, and they are forced to make up other explanations for their origin.