That would be an interesting poll. I was sorry to see that this Gallup Poll addressed Christians only. As it stands, the poll seems undermine your opinion of "most Christians." As for "lots of Jews", my experience with non-orthodox Jews suggests an even greater willingness to embrace Torah as something less than the literal word of God passed down through Moses. Certainly Etz Hayim and the Plaut Commentary - the Torahs of choice in the Conservative and Reform movements - are laced with explanatory text that argue against literalism.
It seems that you're exposing a personal bias.
Perhaps. Nevertheless, one discussion of the Epic of Gilgamesh quotes ...
"You know the city Shurrupak, it stands on the banks of the Euphrates. That city grew old and the gods that were in it were old. There was Anu, lord of the firmament {earth}, their father, and warrior Enlil their counselor, Ninurta the helper, and Ennugi, watcher over canals; and with them also was Ea. In those days the world teemed, the people multiplied, the world bellowed like a wild bull, and the great god was aroused by the clamor. Enlil heard the clamor and he said to the gods in council, 'The uproar of mankind is intolerable and sleep is no longer possible by reason of the babel {everyone talking at once}.' So the gods agreed to exterminate mankind. [emphasis added - JS] Enlil did this, but Ea warned me in a dream. He whispered their words to my house of reeds, “Reed-house, reed-house! Wall, O wall, hearken reed-house, wall reflect; O man of Shurrupak, son of Ubara-Tutu; tear down your house and build a boat, abandon possessions and look for life, despise worldly goods and save your soul alive. Tear down your house, I say, and build a boat. These are the measurements of the barque {boat} as you shall build her: let her beam equal her length, let her deck be roofed like the vault that covers the abyss; then take up into the boat the seed of all living creatures."
In the Biblical flood narrative:
The Lord saw that the wickedness of humankind was great in the earth, and that every inclination of the thoughts of their hearts was only evil continually. And the Lord was sorry that he had made humankind on the earth, and it grieved him to his heart. So the Lord said, “I will blot out from the earth the human beings I have created—people together with animals and creeping things and birds of the air, for I am sorry that I have made them.” But Noah found favor in the sight of the Lord. [NSRV]
Have you read the book?
Yes the initial period had the Gods turn hostile to humans, then there was a political revolution in heavens and the new Gods became friendly or a change of heart. Thus history began. That's the advantage of having many gods.
I have read excerpts, as much as Google book view allows. I was asking you to browse not buy. You will find that moral ideals laid out by God's of Egypt or Mesopotamia (except Assyrians) were quite advanced.
Instruction of Ptah-hotep
You have not looked at the poll carefully. The values shown were for all Americans. Finally the choices were
a) Bible was the actual word of God (30% of Christians)
b) Bible was the inspired word of God (54% of Christians)
c) Bible was an ancient book of fables (14 % of Christians)
Now this does not address the issue of whether the interpretation should be literal or not. For example Bible contains Psalms, NT letters of Paul which are not actual words of God as any Christian who thinks for a minute will concur.
The Pew survey attached below (includes American Jews) provides a better answer, as well as shows the attitude of other religions as well.
Religious Landscape Study
None of this provides what Jews and Christians think about plagues of Egypt and Exodus which are keystone events. From what I read, the beliefs on their actual historicity is tenaciously held
http://www.tabletmag.com/jewish-life-and-religion/144177/reconciling-biblical-criticism