What reality (different from your current world view) would really scare you if it were the truth?
What worries me is that Japan represents the future of the world...economically depressed, aging population, extremely urban with rural population shrinking fast, young people not having intercourse despite being highly open to sexuality, general isolation of people despite being co-located due to technology...21st century schizoid man.
Originally Posted by Lily flower
For me, it would be that the universe was truly random and not meaningful.
We know there is no such thing as complete randomness...even random processes have order and meaning to them. What I find fascinating (and intensely more meaningful as I study it more) is that we are the product of such meaningful random processes.
Accept the past. Live for the present. Look forward to the future. Robot Fusion
"As our island of knowledge grows, so does the shore of our ignorance." John Wheeler
"[A] scientist looking at nonscientific problems is just as dumb as the next guy." Richard Feynman
"[P]etabytes of  data is not the same thing as understanding emergent mechanisms and structures." Jim Crutchfield
Being dependent with no way out for most of my life and miserable. The thing is it could happen to me via accident or health problems by chance. Unlikely but still scary. I could survive pretty much anything else I think.