Reality is, inherently.
Dangerous as well.
Look at where we are living. We can't survive, unaided, outside our atmosphere, where this massive constant thermonuclear explosion soooooo far away's light can actually hurt us (and does cause such things on our Earth as the aurora, overloading of our electrical grids, and sunburns...) and gets captured in the Earth's magnetic field to become the Van Allen Belts, zones of intense YOU'RE GON NA FRY radiation :3
Look at our history. We have plagues. We have viruses milling aboot, infecting, spreading, mixing DNA around. We have earthquakes. Tsunamis. We have several moments where life almost murdered itself (eg. the Oxygen Catastrophe). It looks like all of the humans alive right now are the descendants of a mere handful (less than 10,000) that survived a horrific catastrophe.
Look at our solar neighbourhood. Asteroids hitting our planet more often than we thought. The orbits of our planets may be, over the long term, chaotic, which means that our planets' orbits may move. We have comets.
Look outside our solar neighbourhood. We have events, called Gamma Ray Bursts, that are billions of light years away, yet, if they by chance are aimed at us just right, will KILL ALL LIFE on Earth.
So, is being reality dangerous?
Yes.
I wouldn't have it any other way.
(and yes, it seems that most of the life on this Earth is doing pretty hunky dory fine without brains)
ps. there are people, like Nick Bostrom, Anders Sandberg, who have been busy trying to figure out how to cognitively enhance people so that we can overcome our limitations, so that we can build societies that are more in accord with reality & so that we have a better chance to survive :3