When I was a teenager, I went to church, and almost every ‘Christian’ there was a complete asshole. What makes it worse is that they try to justify it. This honestly made me think that if God and Satan were real, I’d want to know Lucifer’s story. Maybe he’s not actually ‘evil.’
No, I think his crime was that he wanted to take away the whole purpose of life aka living with choice between good and evil. Then the icing was that he wanted God’s glory to be given to him.
My understanding of the purpose of life is that we have no memory of before, we are faced with plausible good and evil choices, and finally we get some hardware that lasts (physical body). There is some irony that the option for evil comes first from lucifer.