So, I've been wondering how the world would be like if religion would've never existed.
Now let's see...
If there was no faith in "God", people wouldn't have wasted their money building churches and donating to slimers who are just money hungry.
If there was no admiration of "God", people wouldn't have fought wars over trying to prove a point that cannot be proven.
If there was no belief in "God", people would have been more independent and technologically further advanced than now. There's a reason why technology drastically advanced in the 19th century and not sooner. Because people stopped believing in "God" and started to think. Innovation is a beautiful thing.
"God" is a mere concept of humanity, nothing more than a theory. "God" is just as real as the big bang.
Humans are stupid to blindly follow something they can't even prove to themselves that it's real.
Even more stupid is, that some become terrorists and kill people just to prove a pointless point.
Also, killing people in the name of "God" is a contradiction in itself, since, according to the bible, "thou shalt not kill".
So, since they are killing people, they are going against themselves and therefore making them nothing more than stupid terrorists.
Thoughts?
You forget that Abrhamic faiths are only the tip of the iceberg in the long history of religions. According to Paul Carus, in his work
The history of the Devil, religions started with the "devil" , that is, the forces of evil, since mankind's first religious impulse is to control the natural elements that are a threat, I agree with this theory especially since belief in demons seems to go back further than belief in God, though it also depends what geographical location we're talking about. For instance, the ancient Sumerians, who lived in modern day Iraq, saw their gods as forces that would torment their existence, where the Egyptians saw their gods as beneficial. This is because of the fact that Egypt's main river is the Nile, which was beneficial to the Egyptians and their source of life, and so they saw all of nature as a reflection of the Nile's waters, and since the Egyptian gods were mostly symbolic of the forces of nature, that's how they saw their gods as beneficial. Whereas for the Sumerians, they were located on the Tigris and Euphrates, rivers which tend to flood violently and so they saw nature as destructive to their lives. The point is, while religion may have originated out of fear in some places, that's not always true.
To answer the question then, since religion isn't simply the Abrahamic faiths and didn't originate in one place at one time, but rather, in different places in a similar pattern, the world wihtout religion would be very, very hard to make sense of, until at least the invention of non-religious, non-mythological thought by the pre-Socratic Greek philosophers (which may have been the beginning of secularism) where meaning was sought after for its own sake without any of the trapppings of mythology. Later philosophers like Plato and Pythagoras rejected mythology, but not because they rejected religion, but because mythology was not understood by the common man, and too easy to understand for the initiate.
I find the question interesting, and I'd be willing to go further, but I also find the OP formulated his/her question so friggin badly (confusing religion with simple belief in God, saying/implying that religion is opposed to free thought, etc, I could go on...), I just feel like pointing obvious stuff out.