Should I even point out that the movement to end slavery in the United States was very much led by the church?
Also religion in general and in the Unite States Christianity in particular lets people face death without fear. Right now it doesn't look like my mom's sister is going to make it and the only thing that is keeping my mom from breaking down is knowing that my aunt will go to a better place.
Now even if you don't believe and think this is something our brains have made up then surly you have to agree that this does give us an advantage and it is of value to the human race.