As averse as I am to the use of the term “religion” by both pejorative nonbelievers and defensive believers, I think that a fruitful discussion of religion is advanced significantly by examining attempts to study religion.
Tomas Rees at Epiphenom does fantastic reviews of research on religion. And his last post is great summary of his 2011 reviews. Indeed, he has one-page summaries from each of the last three years. So if you have time, I suggest you make it a project to at least read the summary pages. These quick reads could further arm you to defend religion or aid you in attacking religion. But obviously, I would hope for a third option: to help you better understand religion.