So let me get this straight, there is no God, but we are living in a computer simulation?

It's possible according to this Science article in the New York Times.

Until I talked to Nick Bostrom, a philosopher at Oxford University, it never occurred to me that our universe might be somebody else’s hobby. I hadn’t imagined that the omniscient, omnipotent creator of the heavens and earth could be an advanced version of a guy who spends his weekends building model railroads or overseeing video-game worlds like the Sims.

But now it seems quite possible. In fact, if you accept a pretty reasonable assumption of Dr. Bostrom’s, it is almost a mathematical certainty that we are living in someone else’s computer simulation.

...

Dr. Bostrom assumes that technological advances could produce a computer with more processing power than all the brains in the world, and that advanced humans, or “posthumans,” could run “ancestor simulations” of their evolutionary history by creating virtual worlds inhabited by virtual people with fully developed virtual nervous systems.

...

There would be no way for any of these ancestors to know for sure whether they were virtual or real, because the sights and feelings they’d experience would be indistinguishable. But since there would be so many more virtual ancestors, any individual could figure that the odds made it nearly certain that he or she was living in a virtual world.

The math and the logic are inexorable once you assume that lots of simulations are being run. But there are a couple of alternative hypotheses, as Dr. Bostrom points out. One is that civilization never attains the technology to run simulations (perhaps because it self-destructs before reaching that stage). The other hypothesis is that posthumans decide not to run the simulations.

...

Dr. Bostrom doesn’t pretend to know which of these hypotheses is more likely, but he thinks none of them can be ruled out. “My gut feeling, and it’s nothing more than that,” he says, “is that there’s a 20 percent chance we’re living in a computer simulation.”

So all the great philosophical questions of "Why" boils down to some geek getting bored.

On the other hand this completely undermines the anti-religious argument. God is defined as:

• the supernatural being conceived as the perfect and omnipotent and omniscient originator and ruler of the universe; the object of worship in monotheistic religions
• deity: any supernatural being worshipped as controlling some part of the world or some aspect of life or who is the personification of a force
• the creator and sustainer of the universe and all the creatures in it
• That all-pervading universal force in and of all things which coordinates evolution. The universal Will behind all manifestation, natural laws and phenomena, composed of Energy, Awareness and Intent. The collective group mind intelligence of the manifest and unmanifest cosmos, composed of consciousness.

The computer / programmer combination was certainly fulfill all those requirements.

Now if he could just right a line of code where I hook up with Megan Fox.

Science, Religion