Some people are ignorant by choice. I had a couple Jehovah Witnesses drop by here a week or so ago. I engaged them in conversation about why they believe and why I measure empirical evidence and come to conclusions that are provable facts. These two older men did not know the difference between a hypothesis and a theory. They admitted to being content with getting knowledge (hahahaha) from their scriptures while I said No I want to know everything and even jokingly asked Do you guys even science? when discussing scientific errors in the Bible. They were scientifically illiterate by choice as well as having very little understanding of history, sociology, psychology etc.... Basically it boiled down to they love the high their neurotransmitters give them when they're doing their gawd thing and are content with their ignorance.
You shoulda seen the looks on their faces when I brought up Lot mwahahahaha