Quote Originally Posted by bbshriver View Post
Atheists believe there is no God/god/gods, and that everything is explainable by other means. That constitutes a set of beliefs concerning the cause of the universe etc.
Atheism is the lack of a belief. Atheism doesn't say anything about explaining things. Atheists just don't think the claims of theists are believable.

Quote Originally Posted by bbshriver View Post
atheism requires a fundamental set of beliefs agreed upon by a number of persons. e.g. that there is no God/god/gods
That's not a set of beliefs.

Quote Originally Posted by bbshriver View Post
I'm not sure of a particular atheist group, but there are groups with atheist tenancies that push a particular agenda (for instance, that evolution is fact, or that there is no "universal" right or wrong)
evolution has nothing to do with atheism.

Quote Originally Posted by bbshriver View Post
Sure you don't go to church on Sunday, but atheists live there life as if there is no higher power, which is a practice of their particular religious belief. Plenty of "Christians" don't go to church either.
So you're saying atheist live their life with no belief in a god? Well that's
the definition of an atheist. They have no belief in a god.

Quote Originally Posted by bbshriver View Post
Most atheists I've encountered seem very devoted to their cause of convincing everyone to agree with them.
So? Nothing in atheism makes this a requirement unlike christianity.

There are no set of rules to being an atheist.

So if you don't believe aliens exist it's a religion?