Assuming religions could be more rational than they are (and I believe that's a generally safe assumption), then why aren't religions more rational? Is it because people prefer something else to rationality? And if so, is that because they don't see many benefits to rationality?
Or is it because humans are greatly irrational and religions simply reflect that fact? But if that's the case, must they reflect that fact? Is a truly rational religion possible? For instance, could there be a religion that was in accord with logical reasoning and empirical evidence?
Are religions generally becoming more rational over time? Or is the appearance that at least some religions are becoming more rational over time false or misleading?
Is there some other reason religions aren't all that rational?
Please note: By rational, I mean here in accordance with logical reasoning and empirical evidence. I am not interested in notions that rationality is compatible here with embracing as true or certain any metaphysical claims, such as the existence of deity, or the non-existence of deity.