i was wondering the same damn thing, pyramids have nothing to do w/ atheism as far as i know. lol.

Since you don't believe in an almighty power or organized religion I dont know why you would want to wear a symbol.
christians wear their shit ... crosses, etc. Its almost liek advertising or promoting. Why couldn't a atheist promote or show what they believe.

I am atheist.
2 people can keep a secret as long as one is dead