Honestly, why do you think Lucifer rebelled? Quoting: Anonymous Coward 27003095
i'm jumping in here late, but it seems that Lucifer rebelled for a few reasons. the first one was that he felt his position was threatened. when he realized that God was planning to create mankind (who would rank above the angels and be in God's own image) Lucifer decided to attempt to maintain his own position in the infinite realms. He attempted to rise above God and forge his own way.
Lucifer was not alone in this. He took 1/3 of the angels with him and launched a war campaign.
Here's the problem:
God knows what is best for everyone and everything involved. There is always good reason and divine providence for all of His decisions and order.
Why didn't God just destroy Lucifer and the angels that sided with him? God will not go back on His creation.
Lucifer tried to overthrow God's Heaven and was defeated. He was sent to Earth, the place that he once desired but now hates. He was banished here. And now, in his fury, is set to destroy it.
Interesting note: Lucifer is still under God's command to aid mankind to reach their full potential, which is a station higher than his own. That has not changed (the command). He has not been relieved of that duty. God will not go back on His intent. But, Lucifer (who's taken on many names now and none of them good) hates what he is commanded to do and rebels.
Another interesting note: Satan attempts to get mankind to think exactly like him - to rebel against God, believe yourself to not need God and to be above God. but, the important thing to realize is that Satan knows the consequences of that thinking and how it leads to destruction. He is already condemned and wants to take all of mankind with him.
He doesn't maintain that deception because he thinks he has something to build upon or that this campaign will produce fruit. He already knows it means annihilation, which is the quickest way to accomplish his task - the annihilation of mankind.