From the web...

"Umm, God I see that you have set the freeWill constant on humans to very high. Don't you think it could lead to some problem?"

God: "Who are you to question my decision, Lucifer?! 😠"

Lucifer: "Woah! Relax, let us atleast have a rational discussion about this design decision"

God: "No! I am the senior developer here and I decide all the design decisions!" *Fires Lucifer and sends him to hell*

That day Lucifer got tired of God pulling his rank when he doesn't have any good arguments, and started his own startup with a couple of other angels

What a coincidence. This comment got my 666th upvote