Beast, much of what you say is true, but entirely besides the point. The point is that religion has a long history, a vast following, and immense importance to those who believe in it, and their beliefs are not ludicrous because 1) it doesn't include easily disproved beliefs, and 2) the things it does believe are made mainstream and acceptable by the aforementioned long history and vast following. Furthermore, many of the things they do believe are quite good and right, such as "love thy neighbor as thyself" and "thou shalt not kill". So calling them deluded and their beliefs ludicrous is an entirely unjustified personal attack, which is every bit as vicious as the claims made by other religious against nonbelievers. It is irrelevant whether you can use science to explain the things religious people believe. This is indeed a good argument in favor of accepting atheism, but it is not an argument for intolerance of religious people.
Do you not agree that people have a right to believe what they want, and teach their kids what they want? It is irrelevant whether the things they believe are correct or even damaging - as long as they are not comitting actual crimes, they have the right to believe whatever they want to. And you have to admit that the vast majority of religious people do not commit crimes in the name of religion, and most religions actively discourage their followers from doing evil.
To me, even if someone's beliefs were provably false, that doesn't provide a justification for attacking that person, unless they are actually comitting crimes, or encouraging others to do so. And in this case, the beliefs aren't even provably false, just very unlikely to be true (in our opinion, which is backed up by some evidence, but not proof).
P.S. Let's not quibble about whether atheism is or is not a religion. Ultimately it's not a question about the nature of atheism, but of how you define the term "religion". The point is whether radical atheism is comitting the same sin as radical religious belief by preaching intolerance. I believe it is, and I think being tolerant, kind, and accepting of others' differences is far more important than whether you do or do not believe in the existence of a supreme being or beings.