To start off my response, yes.. I am an "Atheist". But no, I pretend to make no assumption on the subject.
I personally believe that religion causes more distress than it causes peace, as religion in its very core demands you believe and accept in something with no more causes than simply someone telling you "because it is". It tells you not to think for yourself, but allow the "Divine Creator" to think and plan your life for you.. which defeats the entire purpose of using that mind given to you.
If you look at the Christian bible, there are too many contradictions to the "All seeing, omnipotent, all loving God" as described in it. (ex. Near at least 4 genocides committed by this "benevolent, all loving" God, a God that allows people to be what they decide.. but kills them off when they deviate from "Him", telling Abraham to kill his son just to prove he has faith in this God, and more or less getting scared when it looks like he actually -will- do it, hence sending his angel to stop him). Same thing with the great flood (or ecocide, in other words, "messing up his creation"). Which would seem to prove the ideal that we are only illusioned to have "free will". Or punishing creation for eternity from the "Adam and Eve" story, simply allowing "original sin" to permeate our being, and giving painful childbirth to all women. As well, the constant "?" of how people began to multiply from them when they were basically all brothers and sisters and cousins to start off, they would have been incestual and died off due to mutation before we would ever reach a population.
Religion has proved nothing but to cause wars between the religious cultures of the world, and placed the typical person within it, justifying their actions as only "God commands it", or "God tells me to do this". What about you? How the hell do you justify killing hundreds of thousands of people in the name of this "God", when there is no proof to prove OR disprove the existance of one? I'm typically talking about fundamentalists here, and not your everyday person.
To conclude this, as I could probably go on for hours.. why? I am "atheist", I dont believe in "God" or religion. Does that make me an evil person? I wouldnt think so, as if I dont believe in a "God", why the hell would I believe in the "Devil" in turn? I dont live my life concerned with a concept of "heaven" (paradise), or hell (condemnation), just when my time comes.. or rather all of our times, we will probably find out then if either of us is right or wrong. *Shrug*
My 2 cents.