Fantasies have to be unrealistic because the moment, the moment in which you get what you wanted, you no longer want, you can not love him.
For the desire to continue to exist, requires that these objects remain permanently absent
is not that what you want, but it's fantasy, desire sustains bone utopian fantasies.
A Pascal relates that when he says that we are only truly happy when we dream of future happiness and also to say:
- The hunt is sweeter than the hunted or watch what you want, do not get it, but because you are doomed not to want it as soon as you get it.
So the lesson of Lacan is to live according to your desires not make you happy, to be fully human is to strive to live by ideas and ideals and not evaluating your life for what you have achieved in terms of your desires, but by those brief moments of integrity, compassion, rationality, even self-denial, because ultimately, the only way to assess the relevance of our life is to value the lives of others ...