Evolution is amoral and can be cruel, in the same way gravity is amoral and can be cruel. Their amorality has nothing to do with whether they exist.
The God of the OT is a character in a book. The actions and/or lack of morality of this character also has nothing to do with whether it exists.
People don't believe the OT for far more straight-forward reasons, like talking snakes,magic whales and other absurdities. What we find ridiculous is that you take an obviously made up story, and not only claim it is true but also that the main character is prefectly moral despite doing all sorts of immoral stuff.
The God of the OT is a character in a book. The actions and/or lack of morality of this character also has nothing to do with whether it exists.
People don't believe the OT for far more straight-forward reasons, like talking snakes,magic whales and other absurdities. What we find ridiculous is that you take an obviously made up story, and not only claim it is true but also that the main character is prefectly moral despite doing all sorts of immoral stuff.