We have emotional reactions to events and experiences. An omniscient God that reacts emotionally at the time to events that it knew would occur before time began is ludicrous. You can't be aware of everything all the time, and still have it make sense to get angry or sad or happy because someone finally did something you always knew for a fact that they would do. The only emotion that makes sense for an omniscient being is boredom.
I'm not anti-Christian. I'm anti-stupid.