some of the parasites maybe. but not all.
there were also people eating other people and sacrificing people. those are not of God, hence irrelevant.
as for homosexuality, idk what you are referring to. and I also have no idea what you mean by serpent god of wisdom. I do know that most religions do not have the fullness of the gospel.
the Bible is not science, and is flawed; likewise science is not God, and is flawed. the Bible was written by man, not God. It is a record of an ancient people. However there are teachings in it that are central to the christian faith. science gives you theories, and is, in my opinion, a fickle thing to trust.
you have taken a few "religion is stupid" classes I see, and your arguments are unfounded as most of them have nothing to do with our beliefs as christians. I belong to the Church of Jesus Christ of Latter-day Saints, and the fulness of the gospel has been restored. I would much rather have hope in a God, than know for certain that when I die, thats it. as a consequence, I am not afraid to die. its rather nice actually.