You know him. You like him. Neil deGrasse Tyson - astrophysicist, cosmologist, author, TV celebrity and director of the Hayden Planetarium.
According to Dr. Tyson and a load of eggheads like him, there's a 50/50 chance that you and I (but especially you) don't even exist. They're giving even odds, 50/50, that our entire existence is really just some sort of programme on some other entity's hard drive. We're just characters in some extra-planetary version of Sim City.
Sit down, take a load off.
“I think the likelihood may be very high,” [Tyson] said. He noted the gap between human and chimpanzee intelligence, despite the fact that we share more than 98 percent of our DNA. Somewhere out there could be a being whose intelligence is that much greater than our own. “We would be drooling, blithering idiots in their presence,” he said. “If that’s the case, it is easy for me to imagine that everything in our lives is just a creation of some other entity for their entertainment.”
I don't know but is Tyson making the case for the existence of God or gods and maybe we're just creatures on the laptop of some indolent teenage deity with skin problems, hygiene issues and a bad attitude.
And there are other reasons to think we might be virtual. For instance, the more we learn about the universe, the more it appears to be based on mathematical laws. Perhaps that is not a given, but a function of the nature of the universe we are living in. “If I were a character in a computer game, I would also discover eventually that the rules seemed completely rigid and mathematical,” said Max Tegmark, a cosmologist at the Massachusetts Institute of Technology (MIT). “That just reflects the computer code in which it was written.”
This would explain the whole "God as Loki" notion, just hovering overhead trying to get us to screw up and then squishing us like bugs before discarding us to the eternal "deleted" file.
I'd like to say that all this pisses me off except I'm no longer sure that "me" exists except as a few thousand lines of really advanced code in some spoiled kid's game console.