Religion is mythology. There I said it. When I was in high school, we spent an entire portion of my English class studying mythology, the ancient Greek and Roman kind. It would be good to include other religious myths into that unit, as there are so many commonalities in the ancient myths.
I guess that one's own version of mythology is supposed to be respected as truth, but once you study religious myths with an open mind, you realize that all religion is based on mythology. Sometimes one enjoys pointing that out to those who haven't yet or never will come to terms with the fact that what they've embraced as truth is based on mythological stories. Sometimes it's simply done in response to the claims or insults projected on us by the religious. Not that one can't learn or benefit from these myths as long as they aren't taken too seriously or literally.
I don't totally understand why so many humans are attracted to these myths, but I've accepted that they do provide some type of purpose and meaning in the lives of many individuals. It can be a problem when they are taken to an extreme or used to control others and influence government. Like anything that humans develop, there are both negatives and positives that come from religious mythology.
The positives that I see in Christianity, is the increase in charitable giving. While one can certainly be generous and charitable as an atheist, it's easier to make a difference in one's own community when one is part of a group. We are after all, animals that usually thrive better in groups.
So, I do give credit to the many Christians in my own community who support food banks, free or low cost clinics etc. As long as there are no strings attached, these are things that should give members of these church communities a sense of satisfaction and accomplishment.