Sympathy for the devil

in our life religion thoughts as that God is right and the devil is wrong, but have we ever thought why?
Satan is not always been a Devil, he was an angel once, an angel called Lucifer. he love God so much and all of His creation except for one "Human". God wants him and angel to vow down to human. He wants all the angels in heaven  to love the human more than God. Lucifer disagree with Him, because he love God so much he cant obey His order, so Lucifer rebelled to God, not out of  an Evil act but out of Love For Him.