spider man is fictional. He also didn't create everything
No strictly true, Spiderman has created work and wealth for many people!
An imaginary character earning dollars for those who spread his word, rather like those millionaire evangelists!
Boss would say one person came up with Spider Man but every tribe in human history has always believed in god(s) so that's the difference between spider man and god.
Do you believe that proves god exists? Just because every society on the planet believes in god(s)? I don't. I think the human mind being superstitious, curious and having a healthy fear of the unknown is why we came up with god(s).
But you are right. Just because we came up with god(s) doesn't mean he/they are real, just like Spidy isn't real just because someone came up with the character.
Let us not forget the more important question: Did they come up with the same God?
That answer is no. In fact, in what one culture would call a god, another would call a king or ruler(Romans and Greeks had rulers proclaiming themselves Gods as well.) God is not defined the same everywhere, which is a problem with that argument.
In fact, the fallacy of the argument is equivocation. Every god has to be defined as the same in order for it to be true. The Jewish definition of God do not apply in most cultures.
Here is another way to use that argument. There are numerous Gods. That is why different cultures believe in different gods. It is also why polytheism is true and monotheism is false since it is obvious that there have to be more than one God in order to have enough gods for all these religions.
The fallacy here is assuming humans are infallible (really an appeal to a false authority but nicely cloaked). Even though we may believe and act as if something exists that does not mean it exist!!
A pretty example of humans believing and acting as if something exist but actually does not are little kids and Santa Claus. Kids are humans. Many have learned about Santa from a well trusted authority(their parents first of all), and there are even rituals and practices for kids surrounding Santa.
Yet, Santa Claus does not exist.
Note, we have numerous cases of people believing something exists and actually does. Like the Sun, Moon, raining days, people they love and talk to, etc , etc. But it is important to demonstrate a case where the object in question does not exist and we know it does not exist. There just not that many of those cases.