I wonder if the fact that the topic of religion is always coming up actually fosters belief in such things as the resurrection of Jesus? Perhaps being inundated with discussion of a highly improbable event works to overcome its implausibility in our minds? Maybe we hold contradictory views that we know the miraculous is ridiculously unlikely, and yet it seems plausible because of how often such ideas are discussed?.

Perhaps the same mechanism functions with belief in alien visitation in a culture saturated by Science Fiction?