ExB: but the entire theme is would you be happier not knowing answers and keep your blinkers on? Can you be comfortable with not knowing?
Those seem like two different things. A person who is ignorant about the facts of a matter may not know he is ignorant. His understanding is the truth, as far as he knows. Such a person could very well be happy, if his understanding leads him in that direction.
A person who recognizes that he doesn't have certain answers is aware of his ignorance. He can be comfortable not knowing, as long as he recognizes that those answers are currently not available. He can want those answers, but the thought of replacing the lack of knowledge with explanations based entirely on imagination would not make the uncertainty go away. On some level, once you recognize that we don't have the answers, self-deception will not work.