The fact that religion (ANY religion) cannot be proven either way frustrates me. People insist on claiming that their religion is factual, when they can't really prove it. That's part of the definition of religion: it's based on beliefs.
When you look at many religious beliefs with scientific eyes, most parts of religion fall apart: the sun is not rolled across the sky each day, for example, and the rain is not tears of the angels. In these regards, religion is wrong.
However, where religion and science truly clash is in attempting to define the undefinable: is there a god? (Or more than one?) What happens to the soul after death? (Does the soul even exist?) In these regards, religion isn't wrong, nor is it right. There simply isn't a provable answer either way, and so we argue endlessly in circles.
Perhaps religion's greatest purpose is that it gives us a set of moral guidelines, and comforts us in our darker moments. Given the choice, which would you rather believe happens after death: that you are reunited with your deceased loved ones, or that you simply cease to exist? Religion may not always be right, but I doubt it will go away anytime soon.