How about the utter disrespect we show to Jehovah every time we watch anything about aliens? Um, I can't remember the exact reason but something about disrespect for his creation.
And watching superhero movies is bad because they are basically gods with godlike powers and if you watch them you are glorifying, worshipping!, other gods.
They're just like the Taliban, really. Pick something extreme and run with it, enforce it on others.