Atheism isn't a belief, but a lack of belief. I would agree that it doesn't matter who believes what, as long as they're not shoving down others throats. Unfortunately it is shoved down our throats, from one extreme (religious terrorism) to another (C of E schools choosing only believers as entrants). Whilst it is not to blame for everything it is to blame for a lot - and what frustrates us atheists is that it is based on absolutely nothing at all.