Find me one major religion that does not hinge on the presence of supernatural beings, like gods. The most major ones right now are (1) the three western religions, all of which require a god, (2) Hinduism, which requires not only a pantheon of gods but a separate element of living creatures that returns after death, an element that has never been documented by anyone ever (even those who claim to be reincarnated do not remember their past lives), and (3) Buddhism, which also requires this mythical, unobservable soul. These five faiths represent 2/3 to 3/4 of the world population. I don't claim to speak about ALL faiths in the world, only most of them.
As for the second sentence of your quip... I don't really understand what you're trying to say. What argument? That people hundreds of years ago, during the enlightenment, were highly critical of the belief in supernatural, mythical beings... Yes, I will make that argument. It's true. They were. Or do you suggest that the people who invented these beliefs were also acting in a scientific manner, drawing conclusions based on observable evidence. Cuz I'll make that argument, too.
That there was a man in the sky throwing lightning bolts down was a reasonable scientific conclusion to the ancient Greeks. Or that little demons that infected the body were the cause of disease was reasonable to Europeans in the middle ages. They acted on what they knew, just as we do. Fortunately, we know a whole lot more than they do. We have climbed to the top of Mt. Olympus and found it bereft of gods. We have found these little demons that cause disease, and germs are hardly the work of the devil.
We used to believe a whole lot of things. Since then, we have learned. We have discovered more information, and so refined our understanding of the world around us. The things we have observed lead us to conclude that the mythical elves, fairies, vampires, ghosts, deities, spirits, and fish-people we used to attribute bizarre and unexplained phenomena to are not actually there. Keep in mind, NO HUMAN BEING HAS EVER SEEN THESE CREATURES AND DOCUMENTED IT. Do you really think that since the invention of satellites that can read a newspaper from space, no gnome has dared to pop its little head out from the earth and been captured on film? Has every vampire taken to killing rats in order to keep police from hunting them down? Has no one published a paper on the documented effects of prayer on the restoration of health? All of these phenomena were explored by people who wanted to know, once and for all, what was really going on. Not to prove a point. No one doubts a belief and then goes out in search of proof for that doubt. The proof comes first. We have this proof, and to suggest that we ignore it is sheer folly.