Just at this point. That is 79 % of the population of the earth who practice religion versus 16% who do not, and I didn't even finish the list, according to you, The majority of the population of the earth is working with a below average IQ.
You can't happily include whole the rest of the menkind. In many countries that you included it can be deadly to be atheist, while in other it can ruin your job prospects or social opportunities. Good example is Iran or Saudi Arabia where it would attract mutilation and incarceration. In Turkey teaching of evolution is banned in a primary and secondary schools, and only those who go to university to study biology or agriculture will actually ever hear about Darwinism. Even in Europe things can be bleak. In Poland, where 98% of people declare themselves religious you are fired on the spot if you are at atheist. In Germany you can be atheist if you like but you still have to pay mandatory 1.5% tax for upholding religion. Even in US Bush senior said something nasty about US born atheists, like that they are automatically trietors.
What I said can only hold in a few countries where one is under no kind of threat when choosing between religion and atheism.
Religion is simply intellectual residue from agrarian revolution. Meaning, that's how we reasoned when we were at our most primitive and ignorant.
Religion is mostly based on folk tales and stories about everyday domestic affairs, more or less, a it is nothing more than sacrosantual soap opera. What IQ does one need to follow soap opera and what IQ does one need to understand Lagrangian mechanics that permeates Quantum Mechanics and General Relativity?
But don't get me wrong. Although I am against religion, it might actually be built into our genes. There was an interesting book that showed a difference between us and chimpanzees. Chimpanzees are extremely practical and will only do things with immediate benefit, while human babies have a tendency to follow rituals and strongly depend on on faith and hope.
And faith and hope are big part of every human endeavour even if you are an scientist. Einstein struggled through uncharted territory for 10 years with mathematics of general relativity. What kept him fighting against his own constant errors in judgement was actually hope that he was right.
Obviously, being delusional is a big part of our success as a species.
It's a pity that religion is abusing spirituality because there is a such a thing as a true essence that permeates whole universe and it's simply a mathematics and laws of nature. But differential calculus is no match for superstars like Jesus and Buddha.
When one takes into account that the same mega sophicitated laws of quantum mechanics explain, in great detail, structure of stars, as well as, structure and functioning of DNA, one has to ask why neither Bible, nor Kuran, nor Hindu books mention such essential things like DNA, atoms or expansion of universe? If these books were the word of God, wouldn't a God be smart enough to know what DNA or atom is? It's just proof that holly books are not word of God at all, but simply word of very ignorant writers.
Religion is no more than simply a measure of somebody's primitivism.
What average intelligence means is that 50% of population is bellow average intelligence. Somebody has to be the 'tupid one. Essentially, when you walk down the street it's every other person.