When will people stop believeing in sky daddies?

Another intelligent article which was posted on Richard Dawkins website explains how in 100 years xianity wont exist (click here) Half the people they asked said that nobody would be an xian by then. I wont be alive then unless science makes people live longer, which it might. Imagine living in an non-xian country.

Now im not saying that a muslim country would be better however with people like Richard Dawkins on the loose how can anyone still be believe in sky daddies in only 50 years time?