Do you mean that you dont have religion, dont believe in God, or you just dont believe in anything. I'm a non-believer of the highest degree. I barely believe I'm typing right now. But I recently came to the realization that whether everything is real or not, whether I live in the matrix or whatever, I still have to live here. Unless I can get out of my body.

You probably just meant why believe in the bible cuz people wrote it and people arent God. I dont. Because human beings are not infallible. It's practically amazing there arent a billion misspellings(spl?) in the bible.

There is a bible that was claimed to have been dictated to a man by an angel with permission from God. But he coulda been high.

If religion isn't the way then check out science! It's cool. Quantum Physics discusses reality right down to the atom.