I think there is fertile ground. I can think of three things. Freud thought that religion was man's reaction understanding his own mortality. There was a recent experiment that confirmed that a person's impression of their god's opinion was just drawn from their own. Essentially, god is a sock puppet. Finally, there's been a lot of work in the development of morality. Rules-based morality, which is what religions generally tout, is an earlier stage. It may be that religion appeals to some people because they are stuck in that stage.
If you'd like a good starting point on the subject, you might try "Breaking the Spell", by Dan Dennett.
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