Nihilists are people that believe that nothing exists, not the world not their physical being etc etc. Not sure to quite what extent they take it to, but i think its all the way apart from the very fact that they exist, the old cogito sum.
Sounds almost like that would take as much faith as believing in a god, much easier to just think that theres a lot of material out there, and you just happen to be a lump that has some strange reactions that are called thought.
Unseul
Give a man a fire and he's warm for a day. Set a man on fire and he's warm for the rest of his life....