Because everyone knows science fiction makes you dull and insipid

[wanderingbhikkh]

"Genre novels, he says, shut down imagination and therefore are ideal reading material for the anxious traveller because it reduces the ability to speculate. Literary novels on the other hand promote the imagination, and in order to do this a character who is hyper-vigilant ie fully attentive, has poor understanding and is emotionally bewildered is ideal as a protagonist." - The Art of Subtext

Emphasis mine.