It brings hope, unity, and comfort at the thought of the afterlife. Not to mention humanitarian efforts.
Religion is a very, very large institution. And like every very large institution, while there is goodness, there is also corruption. You act as if you're somehow intelligent for pointing out the corruption. Not only that, but if there weren't religion, humanity would find something else stupid to kill each other over. It's the way we are.
I don't like religion for the most part either, but you just come off as an edgy tween who just got his Xbox taken away by his parents.