I wouldn't call it fear of reality, nor would I say it is an educational problem.
I liken it to the guy who keeps buying drinks for the pretty girl in the hopes that all that giving will get him somewhere. If you want something bad enough, you'll keep on trying to make it happen, and the pretty girl depends on this as well (free drinks).
These people are not stupid and they aren't scared. In my opinion they simply don't think this world deserves to go without being judged any longer and they want that fateful day so much that they are blind to the con-artists who are out there (those looking for free drinks).
We all handle the injustice of the world differently: some love it, some simply accept it, some work to prevent it, and others pray and beg for God to come and start smacking people around. It just so happens that some of those who pray for God to come and "set things right" get a little excited, sell all their possessions, and wait on mountain tops for the big day they thought was going to be yesterday.