Sure it has merit to say that, generally speaking, Christianity espouses responsibility and atheism does not. Where are the tracts of Atheist values and dogma that carry a deep message of responsibility? Point me to _any_ symbolic representation of central atheist values - There is nothing. To be atheist is to be not associated with any belief system, and without any coherence among atheists, I can't say anything about atheists in general, but I certainly cannot say that they all think the world has a deep meaning that they're directly involved in.

So basically you're saying that as an atheist I have no idea what you're up to... Right, because you're not up to _anything_ that other atheists are up to. You're a heterogeneous mix of feelings and ideas that are mostly based in Western values but are held together loosely. I can look at a devout Christian and know that he's guided by his faith to taking up hard tasks and completing them diligently as part of his commitment to his faith.