Sometimes I'm scared to go to sleep.  But not because I'm afraid of the dark, or the dreams, or even the next day.  Of course, there are times when the late nights are filled with freedom, energy, and possibilities, and to cut it short would be a shame.  But this would be different.  I guess you could say that it is loneliness, but maybe that is not really the right word.  I think it is more like, going to sleep feels like leaving something unfinished.  That you couldn't figure out how life was supposed to be, and to end things would mean that you are powerless.  It's not true, of course.  The next day brings with it infinite possibilities, though with that it also brings fear sometimes.  But sometimes it just feels not right.