Honestly, as atheism is a lack of belief in the supernatural, it can not possibly be called a belief system. You'd have to be thick to come to that conclusion.
I don't believe in leprechauns. Do I now belong to some group who have a belief system about not believing in leprechauns? I don't need a kind of anti-faith-faith to know that the creation myth is a lie, that the ark never existed, and that we evolved over billions of years. These things are proven facts.
I have to listen to simpletons telling me things like "science is just another belief". Really? Does your telly turn on when you flick the switch to watch Songs Of Praise? Of course it does. The amazing science it takes to broadcast a TV show turned out to be true. Have a look up in the sky and see how many planes are flying, using the sciences of physics, aerodynamics, electronics, radar, radio, jet propulsion, and burning fuel that took the sciences of geology to dig out of the ground. Fuel from oil that, BTW, was there because of ancient forests from prehistoric times way before the alleged beginning of the universe according to the bible.
I have to listen to the uneducated telling me "but evolution is just a theory". Damnit, a theory is an idea which has never been disproved, ie: a fact. Like the theory of gravity (you're not floating around right now, are you).
So I am waiting around for any credible evidence for clairvoyants, tarot cards, astrology, psychics, ghosts, or any of the gods offered by any religion on Earth. Of course there isn't any. So I simply take the logical view that there is no god.
And yet no matter how much time or money I spend finding a good performing non-denominational school to send my child to, I have to put up with pointless acts of worship and RE teaching that demands we respect religion.
But back to topic... Having an atheist perspective is the result of a lack of belief, not a belief in itself. Please let this be the last I hear of this drivel.