I see no harm in having pleasant thoughts, be they realistic or fantasies, torridon. It's soothing to be able to escape from some situations, to travel in your head. Quite therapeutic. That isn't the same as believing fantasies to be true, such as children believing in fairies or Santa Claus.
Siriam, I read the article. It really doesn't say anything that hasn't been said before. I've no doubt that people have near death experiences, what they signify is debatable. I don't see how their significance can be proved one way or the other.
The only thing I know is that I do not want a NDE. No thank you! If I did, I'm sure it would be horrible.