Human beings are still rather stupid and unevolved. We filter out whatever does not match our current world perceptions and beliefs in order to avoid cognitive dissonance. Just look at all the Catholics and Muslims who still follow their corrupt and immoral churches/mosques/priests/imams (to point out just two of many). The premies are just a small drop in the bucket of deluded individuals, of which we were all unfortunately part of.
You know the old saying: "when one person suffers from a delusion we call it schizophrenia, when tens of thousands suffer from a delusion we call it religion".