We should accept the fact that the Bible is subject to the cultural and personal biases of the authors. Frankly it is only in that context that you can actually get a coherent narrative of God's interaction with us.
It's pretty simple, isn't it? If it goes well, you give God the credit. If it goes badly, you give people the blame. It's a flawless copout.
I know you don't believe in anything of this and think that mainstream scientist have everything figured out.
Science is basically a matter of one step forward and two steps back; every question we answer provokes two more questions. That's why science-minded people tend to be leery of any claims that a book has all the answers.
I used to have as my signature, "People who have all the answers usually don't understand the questions." That's the problem with the Bible.
Why did Ian Fleming write Casino Royale? Did he need the money? Was he trying to prove he could write as well as Tolstoy? Did he do it on a bet? I'm sure he told people why he did it in interviews, etc. but how do we know he was telling the truth? He was a fiction writer, after all. How do we know that anything he said wasn't fiction?
And if we can't tell the intentions of somebody in our own lifetime, how much harder is it to tell the intentions of somebody thousands of years ago?
The mayans depicted the same deities depicted in mesopotamia, as the ones in ancient India and Peru.
Similar is not the same as "the same". There are similarities between myths around the world but there are also great differences.
Also based on your logic, why should we believe that Washington and the founding fathers really existed?
There is a variety of evidence that George Washington et al. existed. Volumes were written about them during their own lifetimes and shortly after by people who actually knew them. No single piece of evidence is conclusive but the body of evidence is persuasive.
just because everybody believes the story means is truth and I am forced to believe it too?
That seems to be your logic, that the gods "must" be real because people all over the world believed in them.
Bottom line, why in the world ancients civilizations would base their existence in writing our origins the best they could to pass it onto us other than the truth?
The bottom line is that they didn't know "the truth". They only knew what they believed to be true. That's why beliefs all around the world are different, because nobody knows "the truth".