I'm sorry, but you've been brainwashed.Exactly.
And this is what the Bible explains.
Man thinks that through his own finite reasoning, he can reason greater than God, who gave him that reasoning, which has now become perverted.
The problem is that you soon are reduced to absurdity, when you reject the God whos nature is logical.
If you are the arbiter of morality, what happens if someone disagrees with you?
There's nothing I can do for you.