Again, this is the "Marie Antoinette Syndrome" at work.
Especially when people are born into the JW religion, and especially if they leave rejecting all religion afterwards, it can be very difficult to understand what are elementary and very basic religious concepts to others.
While it isn't a bad thing to never get involved with religion again after leaving the Watchtower, it can leave the exJW dumbfounded when they attempt to read poetry, try to understand art, or even cause problems in their attempt to keep their critical thinking at its best. For instance, the Christian concept of "grace" has inspired music, plays, paintings, caused wars, and in 1999 became a bridge between Catholicism and Lutherans in general when they came to agree on the concept (thus ending what started the Reformation in the first place). One cannot even fully appreciate the song "Amazing Grace" and its historical significance without this basic knowledge. Though as a Jew I don't have this same concept in my religion, I at least know what the Christian view means.
The significance of these things and other subjects based on nominal theology (which is never taught correctly or at all to Jehovah's Witnesses) can leave a person who has left the Watchtower lacking a significant amount of education in things necessary to understand the world around them. Some atheists often refer to other atheists among ex-JWs and ex-Mormons as a "narrow atheist" since their stand is limited to only what they've been exposed to. (The term refers to how sometimes their narrow exposure to only cult teachings cannot be used to argue against other religious systems these have no knowledge of, thus limiting their atheist stand.)
It can be difficult however to leave the "narrow" state. Dealing with what humorist Reba Riley has termed "Post-Traumatic Church Syndrome," the distaste for religion (and distrust) can be so great that ex-church members might not be able to endure corrective education even for the sake of merely understanding concepts generally shared in the world community.
This is one of the most horrible effects of cults. It can rob a person of learning simple terms as comprehended by most, thus making it challenging to at least know the basic meaning behind why people do things, create art, or what they mean when they speak of their particular convictions. Again, most people (even non-Christians like myself) understand concepts like "grace" as taught by Christians (even though we don't ourselves subscribe to it). But for some others, even the ability to heal enough to stomach learning these things has been stolen by their cult experience.