[Serious]Why are you not a believer of the existence of God

[Lord Orwell]

I seriously doubt that. For the average so split the population down the middle, you would have to have a normally distributed population of intelligence. I would suggest that the distribution is not symetric, and the majority are below average in the actual population.

you are suggesting that MORE than half the population is below average in intelligence?

There are a couple of things to consider here:
One: Do you believe this to make your ego bigger? LOL
Two: Who is quantifying the intelligence? As you are no doubt aware, anyone of civilized society would fail any kind of test written by a plainsman or aborigine, and especially one checking for common knowledge.