I think atheists do understand that. But you are making an emotional argument, which can't be argued against because that is how you feel. As I wrote to
@mikkel_the_dane in one of the posts, where he asked if "you could give a correct answer to something that is not based on science?" and you can do that. But an answer that is based on personal opinion, feeling or someone's assumption is not a strong argument, even if it is correct.
It is important to keep things separated to avoid confusion. One thing is what gives you meaning, that is a very personal matter. But is completely different from claiming that religion gives you/us (correct) answers, which is the claim I'm protesting against.
Im not saying the need to believe in something is misguided, people believe in all kinds of things not only religious which gives them meaning.
When trying to figure out whether something is true or most likely to be true, an argument based on emotions is not a valid one.
You asked me:
Can science prove that faith is greater than fear, love greater than hate, generosity greater than greed? Or are there some truths which must be apprehended with the heart, rather than the intellect?
I gave you a clear answer that science can't do it. Yet, you have not demonstrated that religion could do this either?
However you seem to think that is an issue with science, despite it never having claimed to know the answer, yet you do not seem to have an issue with religion not being able to do it either, why is that?