God cast Lucifer down into Hell for asking too many questions?

I mean, it's a mythology that changes based on who is telling the tale, so...

Yeah, sure, if that's the story you want to tell.

But other reasons range:

• He tried to create stuff from nothing, a thing only God is capable of doing, and was cast out for this blasphemy
• He fucked God's Wife (Lilith, the First Woman)
• He taught humanity to defy God by lying, which is the True Original Sin
• He was dispatched by God, deliberately, as a Loyal Opposition and all part of the Great Plan
• That shit ain't even in the Bible, you're a heretic for believing it