Because you're bigoted over a book of fiction, which is retarded.
And you believe that the bible is true, so prove it.
Can you prove that it IS a book of fiction?
You can't prove:
A talking snake made a rib-woman eat magic fruit
A dysfunctional family gathered 2 of EVERY animal on earth to put on a boat
The parting of the sea.
Person turning to salt.
The world being made in 6 days.
Heaven
Hell
All of Jesus' miracles
The resurrection.
The burnibg bush
The actual 10 commandments.
...
That enough to make it a work of fiction??
Can you prove that it did not happen? After all, science concurs with the "order" of creation.
I can believe that the earth was created in six days (length according to the Lord). His time is not the same as our time.
It was a serpent, that could apparently walk "upright" for its curse was to crawl on its belly, afterwards. And there are "myths" from almost every culture of a time that animals could speak.
You are thinking in terms of man. These feats were done by the Lord. If men were empowered by Him to do these things, it was as an example to the arrogant, proud, and selfish rulers of sinful nations.]
What culture came up with anything close to the ten Commandments? Before this, when laws were written, the laws were different for different classes of people and for different tribes/races. It was a totally new concept, that the same laws apply to every person, including the rulers.
Because something is "hard" to believe, does not make it fiction: take Calculus.