I should be hopping on a flight to New York around the time this goes live on the site. Flying has never scared me; snakes, spiders and rodents don't really bother me either. Instead, there's one thing that will send shivers of fear down my spine faster than anything.
I get frightened every time I close an important document in Word and it asks me if I want to save my changes when I could swear I didn't make any changes.
What's your worst fear?