[Gwathagor]

I think fantasy is intended to strengthen/reinforce our sense of the true, the good, and the beautiful. Once it ceases to do that, it is no longer valid. Just like anything else, fantasy literature can be either used properly or it can be abused. The placing of limits upon fantasy writing prevents its abuse by immoral imaginations. There isn't anything about the human imagination that makes it particularly 'pure" or 'good'; however, the limits placed upon the imagination liberate it from baseness and ignorance, enabling people write really good stuff. Without those moral limits, fantasy would be rubbish.