My personal feelings are of this. None what so ever, if we think about, look deeper into things that really don't matter and not of importance. then we are falling into a place of no real concern. I personally Don't want to know anything about the fallen Angels and how satan came in to being and fallen from heaven. If I did? then to me I would be having an interest in the enemy and pushing my real personal interest in the one who is going to destroy the enemy, and turn my full interests in God and his word. My personal feelings, thoughts or concern of the enemies? None what so ever. Can I ask how anyone be interested in the enemy and his fallen angels, when we have a God so powerful, who defeated Satan, Died for our sins, and still loves us to know him? My advice without quoting scripture as you requested, don't let things that deter you from good, or you will distant yourself from the source of goodness. God bless all.