My experience is that many religious people are mentally lazy and are quite content to let other people do their thinking for them as to what to believe . Sub consciously they probably think the burden is off of them and rests with those that taught them.
Even when I was "in" I was surprised at how many Elders /MS did not want to discuss the Bible or religion outside of the meetings the common reason was "oh we get enough of that at our meetings this is our free time ."